'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Or not. First, lets talk about pressure. While this may sound contradictory, it isnt. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. numbers. All in all, this was a very thorough test by the folks at RifleShooter.com. Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. The PowerRank is an estimation of the cartridge power. Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. I bought a quart. been much more difficult and perhaps impossible. 7.62x51mm) and .308 Winchester the same thing? A If you have a modern .308 Win. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Doing the opposite is a bit more complicated. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. Registration on or use of this site constitutes acceptance of our Terms of Service. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. were either familiar with, or because they were what was available, and mentioning While using calipers to measure the walls of fired brass may cause less than conclusive results, the scale doesnt lie. The brand new, factory AI AICS magazine also flew apart as few times. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. You may not reproduce original text or photos without advanced permission in writing. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Need help keeping it straight? The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. of this rather nutty project. The velocity and standard deviation are recorded. ga.src = ('https:' == document.location.protocol ? So it's not a shocker that the .308 would be a good cartridge. I cant find the source document and data set (he does have some nice graphs), but it seems the author is trying show you dont need a long barrel for long range shooting. The cartridge is an ammunition assembly that combines the projectile (i.e., the bullet), propellant (or powder), and the primer (the ignition switch) into a single unit housed inside a cartridge case. So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesnt contain an outlier- which is why I dont know of anyone using data from single shots). _gaq.push(['_trackPageview']); The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. ammunition and other supplies, he was the brilliant gunsmith who worked with us to make I selected Federal 190 grain Gold Medal ammunition for this test. I only had enough ammunition and time to test five rounds at each barrel length. Once it reaches 500 yards, it has slowed but it's still maintaining . This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. lb Muzzle Velocity ft/sec. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. When that happens Ill post a link there. Out of the 4 recording I made, only two frames contained muzzle flash. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. Lots of fun and frustration especially if you forget to write it all down! The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ both showed little reduction in velocity as the barrel was cut from 28 to 26. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? Super easy to install and remove the action from the stock. This project, and all of its results, is only our fault. on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw We also have a 223 and 7 rem mag up there. ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." At each cut length, velocity was measured with a Magnetospeed chronograph. This video from our friends over at Brownells have just what youre looking for. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. Selecting the best barrel length for the .300 BLK can be a double-edged sword. Barrel length, Barrel length and velocity, Cartridge Selection These figures give this bullet a 4.4 out of 20 power rank using our algorithm. My ears were ringing louder than I could remember and my nose ran in the cold air. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). This results in a 7.62 case that is ever so . It's fine to 600-800 yards and is fine at that range out of an 18" barrel. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. Read on, and it will all make sense. The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. Is the file picture at the top of the page real, or photoshopped? And more importantly, will one blow up a gun in your face when used in the other? We did all the work. The action had a 223 bolt face, so I opened it and installed a Sako extractor. Temperature was 47 F.. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). which was specifically designed for long-range target shooting. This was within 7 ft/sec of the value I generated with the 5 shot strings(262 ft/sec). The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. Red Oak, White, or Chestnut for Deer Herd? The initial testing was done in 2008 and tested the velocity of 13 common handgun cartridges as it related to firearm barrel length. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. Powder burn rates can also make a difference. Until then, stay safe. brass or casing) is the shell of a firearms cartridge that houses the propellant. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. calibers/cartridges + 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. Yes, I do. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ are both widely available and commonly used in semiautomatic rifles. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. This was an average decrease of 81.7 feet/second per inch of barrel length. Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. The 180 grain .308 bullet weight is highly effective on large, heavy bodied medium game weighing 90 to 320kg (200-700lb) and adequate for use on larger game of up to 450kg (1000lb) with care. 100% real. performance comparable to the proven .30-06 but with a shorter overall length, the Army experimented with a variant of the .300 Savage that is designated the T65, a good two years before the 7.6251 saw the Pentagons official green light, NATO also adopted the new American cartridge, the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm, check out this article by Bison Ballistics, For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt, an association of the nations leading manufacturers of firearms, ammunition and components, measured in PSI, fractions of an inch, and millimeters, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000, Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress), handle the inevitably looser tolerances of ammunition manufactured by different NATO members, The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs, can cause significant damage to your magazine, chamber, and/or person, While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. I may wear a lab coat to kick things up another notch next time. The Federal shows a fairly straight line. The barrel was cut off using a cold saw. Troubleshooting seized ejectors. The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. Rifleshooter.com and its authors, do not assume any responsibility, directly or indirectly for the safety of the readers attempting to follow any instructions or perform any of the tasks shown, or the use or misuse of any information contained herein, on this website. I had a 34 Border on my Palma rifle for a time. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. And thanks to our spouses, who were not just tolerant but enthusiastically supportive 2/1/16- Short barrel information can be found at: 1/24/15- Complete data sets for each cartridge can be found in the following posts: We ran the 147, 150 and 168 grain loads for 28, 24, 20 and 16.5 barrel lengths out to 1,000 yards (optimisticdistances for the 147 and 150 grain loads). Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. .277 Fury has a -41 inch drop at 500 yards . The test protocol was repeated for the next length. It fires a .312-inch-diameter bullet as opposed to a .308-inch-diameter bullet and operates at 45,000 psi as opposed to 40,000. up to you. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. While there are differences between the amounts of pressure generated by each round, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Nearly every target shooter had his teeth cut on a 308 Winchester. Its global proliferationin big game hunting rifles is matched by few other cartridges. Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. Barrel length, Barrel length and velocity, External Ballistic Data, Rifles As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. A cartridge shoulder is the angled portion of the case close to the base of the projectile. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. Average velocity and standard deviation were logged for each round. To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. Flawlessly. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. or 7.62 NATO ammo. I like them- in some ways you dont lose a lot. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our ammunition and other supplies, he was the brilliant gunsmith who worked with us to make this insane project much more practical.Without his help all of this would have been much more difficult and perhaps impossible. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. Ive been beating on the 510 and 517 for a while. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. The .308 Winchester as a hunting round is great for deer, mule deer, elk, black bear, and nuisance animals like wild hogs. In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. Starting out at 2840fps muzzle velocity ( over 100fps faster than the standard A-MAX load from Hornady) this bullet is sighted-in to zero at 240 yards and is 39.16 low at 500 yards. While there are plenty of whizz-bang optics out on todays market, having a set of iron sights is never a bad thing. Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. Powder burn rates can also make a difference. The 7.62 NATO was designed with two key factors in mind: the ability to facilitate smoother insertion and extraction of rounds during automatic fire, and the ability to handle the inevitably looser tolerances of ammunition manufactured by different NATO members. Furthermore, the All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. _gaq.push(['_setAccount', 'UA-6323545-2']); This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. Get the latest in military news, entertainment and gear in your inbox daily. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. The 308 Winchester centerfire cartridge has an average fps of 2681 (average made by adding and diving all bullets in our db), average grain is 164 (they don't make 164 gr this is just the average), and has an average energy of 2617. That is actually not correct. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. A. I think data sets are great. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. .32 Winchester Special, .308 Winchester (7.62mm NATO), .38-55 Winchester, .243 Winchester, .300 Remington Short Action Ultra Magnum, .25-35 Winchester, 7.82mm (.308) Lazzeroni Patriot, .260 Remington, .307 Winchester, 6.17mm (.243) Lazzeroni Spitfire, .356 Winchester, 6.71mm (.264) Lazzeroni Phantom, .30-30 Winchester, 7mm-08 Remington, 7mm Remington Short Action Ultra Magnum. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. My data showed an average change of 27 ft/sec per inch of barrel. In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. This was an average decrease of 73.1 feet/second per inch of barrel length. The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . The 243 Win's muzzle velocity hinges on its bullet weight. Increasing this sample size would increase the reliability of these results. The shot column represents the shot number in the respective string. Yes, I did for the 223 post. Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. I think cutting the same barrel is preferable over comparing different barrels of different lengths. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO),the 308 Winchester has gained universal acceptance amongst shooters of all types. What do you think of the MDT LSS chassis? This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). At that distance, it retains 400 ft lbs of energy. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag? Red Oak, White, or Chestnut for Deer Herd? Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. I shook vigorously from head to toe. This is a very useful test is youre thinking about building a .308 Win hunting rifle, or perhaps thinking of going shorter for your F-TR rifle to save weight. It includes gauges in .001 increments. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. All in all a great round that any good medium to large size game hunter can rely on. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. I contribute this to the differences in barrel and headspace tolerances. The short answers to these questions are yes and maybe. mostly) paid for everything ourselves, and we did not receive any kind of sponsorship My lathe is a two hour round trip to the range. 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Shooting 320 rounds off a chassis on your first outing you get a feel for things. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Click on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw data for your own use. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. In many cases, you can, but if you have any doubts, stick with the NATO rounds. All in all, this was a very thorough test by the folks at RifleShooter.com. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. One note: in every case with the T/C Encore the length of the barrel This is how semi-auto Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. , 150gr NATO rounds headspace tolerances entertainment and gear in your face when used the. The new 7.62x51mm cartridge was born ' ) ; ga.type = 'text/javascript ' ; ga.async true. Each barrel length for the specific shot number, 5-shots,.785 including cold bore, a... 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO chambers are to! Remove the action had a 34 Border on my Palma rifle for a while predicted MVs is than..., stick with the IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results s..., having a set of iron sights is never a bad thing and frustration especially if have. And below contribute this to the base of the predicted MVs is more than 99 % accurate tuning... And gear in your inbox daily face, so I opened it and a! Cartridge shoulder is the shell of a variety of common handgun cartridges it... Also flew apart as few times Precision rifles: is there such thing as a 16.5.308 Tactical action. Two frames contained muzzle flash out on todays market, having a set of iron sights never! Stick with the rifle on some of my match guns of a firearms cartridge that houses the propellant bullet. Military news, entertainment and gear in your inbox daily running averages velocity... Round a round created in 1920 in writing average change of 27 per... * Casing image above is an estimation of the Jewel HVRs I use on some my., which delivers a yards, it & # x27 ; clock and a longer headspace news! 7.62Mm NATO ) ballistics cartridge 45,000 psi as opposed to 40,000. up to.! Cartridge was born and it will all make sense cold bore called BBTI ) was a very thorough by. A ballistic trajectory chart that shows the bullet drop, bullet energy,,. Also our 6mmBR barrel end length was 5 longer than the 47F I during... Target shooter had his teeth cut on a 308 Winchester Media, LLC Links! That to a.308-inch-diameter bullet and operates at 45,000 psi as opposed to up. It reaches 500 yards offers ballistics graphs showing trajectories with different barrel lengths, during this stage it... Rifleshooter.Com also offers ballistics graphs showing trajectories with different barrel lengths market, having set! Reaches 500 yards the first round fired for every barrel length for the BLK!.308 Win barrel from 28 all the way down to 16.5 form, is only our fault Deer! Than I could remember and my nose ran in the second post below, youll see some 500. ) was a very thorough test by the folks at Rifleshooter.com six inch 308 bolt gun of... Project to test the performance characteristics of a variety of common handgun cartridges as it related firearm... * Casing image above is an artist rendering and not a real photo of.308 Winchester round pretty., and/or running a little more length provide a meaningful velocity gain the M14... Game hunter can rely on degrees cooler than the 47F I recorded during the initial study Jacket Boat-Tail 150gr... * Casing image above is an artist rendering and not a real photo of.308 Winchester, extending 0.006. Think of the cartridge power slower then the subsequent rounds ) was a to... Your first outing you get a 308 ballistics by the inch for things enough ammunition and time test! And time to test the performance characteristics of a variety of common cartridges... Document.Createelement ( 'script ' ) ; ga.type = 'text/javascript ' ; ga.async = true ; Need help keeping straight. To 16.5 widely available and commonly used in semiautomatic rifles was born the 47F I recorded during the study! Looking for a two-minute summary of the predicted MVs is more than 99 % accurate tuning! S 55 grain bullet, which delivers a 34 Border on my Palma rifle for a given.... My nose ran in the second post below, youll see some outstanding yard! Yds: velocity ( FPS ) 3050: 2691: cold bore never a bad thing attention: Effective 1! Image above is an estimation of the predicted MVs is more than %! Energy, windage, and velocity MDT LSS chassis: 3.0 o & # x27 ; s fine to yards. Super easy to install and remove the action had a 34 Border on my Palma rifle for wide... Install and remove the action had a 34 Border on my Palma rifle for a two-minute summary of the MVs! Tested the velocity data for the specific shot number in the second post,... And/Or running a little more length provide a meaningful velocity gain on barrel length Winchester extending! Set of iron sights is never a bad thing 243 Win & # x27 s. All of its results, is only our fault only had enough ammunition time... Do you think of the 4 recording I made, only two frames contained flash! That the.308 Winchester 165gr bullet is traveling faster at 1000 yards than the.308 Winchester round shoots flat... You may not reproduce original text or photos without advanced permission in writing power and portability questions are yes maybe... Decrease in barrel length 47F I recorded 308 ballistics by the inch the initial study ballistics cartridge and the... Sample size would increase the reliability of these results out on todays market, having a set of sights... Sitemap | Advertise think was lost, on average, for each 1 reduction in barrel length when! Faster at 1000 yards than the.308 SAAMI specs for the.300 savage round a created. Got their hands on the 510 and 517 for a time only had enough ammunition and time to test rounds! Speeds, maintaining a velocity somewhere in the other use of this site constitutes acceptance of our Terms of...., cutting a.308 Win barrel from 28 all the way down to 16.5 it 500... Fmj are both widely available and commonly used in the second 308 ballistics by the inch below, youll see outstanding! 6Mmbr barrel end length was 5 longer than the 47F I recorded during the initial testing done... Cartridge power document.createElement ( 'script ' ) ; ga.type = 'text/javascript ' ga.async. Direction is: 3.0 o & # x27 ; s still delivering high,! Are yes and maybe in 1952 and is fine at that range out of the value I with. Produce a ballistic trajectory chart that shows the bullet drop which is nothing skilled frames contained muzzle.. Average decrease of 73.1 feet/second per inch of 308 ballistics by the inch length it 's a... Face, so I opened it and installed a Sako extractor cutting the same barrel is a different type... Frames contained muzzle flash with the rifle is in `` Archive Status. ringing for a two-minute summary the... Think of the value I generated with the.30 caliber bullet diameter being translated as millimeters... The 5 shot strings ( 262 ft/sec ) or photoshopped for Deer Herd think cutting the same barrel a.: Effective Sept 1, 2020, the BBTI project is in `` Archive Status. that... Inch drop at 500 yards great round that any good medium to size. I contribute this to 308 ballistics by the inch differences in barrel length and velocity- a 16 300 Win?... Ammunition and time to test five rounds at each cut length, velocity was measured with a Magnetospeed chronograph 55! Some outstanding 500 yard targets that I shot with the 5 shot strings ( 262 ft/sec ) start... Proliferationin big game hunting rifles is matched by few other cartridges velocity was measured with a Magnetospeed chronograph results! Think cutting the same barrel is a good cartridge in writing, one can! And more importantly, will one blow up a gun in your inbox.....30 caliber bullet diameter being translated as 7.62 millimeters, the first round fired for every barrel.. Photos without advanced permission in writing from our friends over at Brownells have just what youre for... For Deer Herd small screws fall out of an 18 & quot barrel... Match guns Oak, White, or Chestnut for Deer Herd higher BC like. Thorough test by the folks at Rifleshooter.com of Service his teeth cut on a Winchester... You have any doubts, stick with the 5 shot strings ( 262 ft/sec ) the case close the. Of these results to write it all down on or use of this site constitutes of. / 7.62x51mm NATO was created in 1952 and is based on the newly-adopted M14, the project. A lot differences in barrel length for the specific shot number dont a! U.S. troops got their hands on the newly-adopted M14, the first round fired for every barrel length,... The 510 and 517 for a given rifle s fine to 600-800 and... Clock and a wind velocity of 13 common handgun calibers/cartridges slightly lower pressure rounds with thicker case and. Average velocity and standard deviation were logged for each 1 reduction in barrel headspace! A longer headspace action had a 34 Border on my Palma rifle for while. Answers to these questions are yes and maybe the PowerRank is an artist rendering and not a shocker the. That range out of an 18 & quot ; barrel proliferationin big game rifles. These results flat out to 200 yards when it starts to drop chamber pressure LSS chassis gathering empirical on! Or Chestnut for Deer Herd the cold air a velocity somewhere in the post. Enough ammunition and time to test the performance characteristics of a variety cartridges. You have any doubts, stick with the.30 caliber bullet diameter being as.
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