Super easy to install and remove the action from the stock. real* world weapons: Cor Bon 165 gr. Comparing the data from the 30 shot strings (28 2824 and 16.5 2555) to the 5 shot strings (28 2823 and 16.5 2561) I found a loss of 269 ft/sec (23.4 ft/sec per inch) as the barrel was cut. My ears were ringing louder than I could remember and my nose ran in the cold air. which was specifically designed for long-range target shooting. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). This means throwing .308 rounds into the magazine of a 20-year-old M14 could set taxpayers back the cost of a new rifle and your medical bill at Walter Reed. One has to remember some times taking off that extra inch spoils that barrel and day! 308 Winchester: BBA JHP: 175: 2832: 2700: 308 Winchester Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. Yes, I did for the 223 post. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. My data showed an average change of 27 ft/sec per inch of barrel. Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). For hunting and tactical applications, I see a real benefit to the shorter barrels. AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. The test protocol was repeated for the next length. A. The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. I selected Federal 190 grain Gold Medal ammunition for this test. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. The most significant decrease in barrel length occurred when the barrel was cut from 8 to 7. 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. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. polygonal rifling + For another measure of bullet power, some people prefer to use Muzzle Energy. And if you think you could do better, feel free to spend the money Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. I will actually contour what is left and use it on a custom build. I shook vigorously from head to toe. No further tests will be conducted, but we will maintain this site and data for the use of I think data sets are great. Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. One note: in every case with the T/C Encore the length of the barrel All in all, this was a very thorough test by the folks at RifleShooter.com. My calculations assume a 1.75 sight over bore height. He,he. While U.S. military snipers and dedicated marksmen use a variety of different calibers, it appears the 7.6251 is here to stay for the foreseeable future. With F Open shooting it does take a lot of testing over a long time to come up with the sweet spot of barrel length for one powder type for barrel, bullet brand/weight/and design alone. Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? This was an average decrease of 60.7 feet/second per inch of barrel length. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . 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. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. This results in a 7.62 case that is ever so . The 308 is slightly more powerful and has a longer range. My 22 308 Winchester (above) is my favorite rifle to shoot. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. Very well. The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Do you see any use for a 10 308 Winchester? If your .308 isn't close to these specs, or if you are a sniper or into long range shots you may want to take this a step further and use our ballistic calculator to create a custom .308 ballistic chart to take into account variances. the firearms community. Its global proliferationin big game hunting rifles is matched by few other cartridges. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; 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. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! 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. All these details have been generated using our . 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. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. Bill Marr The gun and support equipment werent in much better shape. 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). Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. the cylinder gap. Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. We did all the work. Both of these deviations from SAAMI specs can result in potentially catastrophic issues. Flawlessly. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Registration on or use of this site constitutes acceptance of our Terms of Service. A. The locking portion of the case will vary depending on the caliber in question. The trigger releases the firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? For example in this chart I lowered the velocity to . 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. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. What are possible sources of error in your experiment? I post it here, for free, so other shooters can learn from it. The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? So what does the charting of the .308 Winchester's external ballistics tell us exactly? 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. Increasing this sample size would increase the reliability of these results. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. My 16.5 308 Winchester (above) is a fun little rifle. was measured from the end of the barrel back to the breech face. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. The cuts were made in one-inch intervals with a rotary saw. So it's not a shocker that the .308 would be a good cartridge. A summary of the data for all four cartridges is provided below. However it is an excellent close-to-midrange round, capable of outstanding accuracy. 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. The muzzle blast from the short barrel eroded away some of the chassis! If you liked this postsubscribe to this blog (top right corner of page). 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. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. _gaq.push(['_setDomainName', '.accurateshooter.com']); All shooting was done from a bench, with a Sinclair rest and rear bag. It helped pave the way for the successful powder company that exists today. For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. I use a Forster Match Rife Headspace Gauge Kit. The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Trajectory for Custom .308 165 TGK #4667 AMMO at 2680 Feet per Second. For another measure of bullet power, some people prefer to use Muzzle Energy . The chops tests ranged in barrel length from 18" down to 3". for a graph of how that particular ammunition performed, or you can download the raw The answer may surprise you. Barrel length, Barrel length and velocity, Cartridge Selection I may wear a lab coat to kick things up another notch next time. This resulted in a velocity loss of 94 feet/second. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ are both widely available and commonly used in semiautomatic rifles. The .308 Winchester as a hunting round is great for deer, mule deer, elk, black bear, and nuisance animals like wild hogs. 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. All in all, this was a very thorough test by the folks at RifleShooter.com. 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. This cartridge has enjoyed a massive following from both the military and civilian market. _gaq.push(['_setAccount', 'UA-6323545-2']); Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. The average data for these four shot data sets is recorded in the table above, as well as the tables below. Since all of the rounds were fired on the same day, I also controlled for ambient temperature. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. Did it really hurt to shoot a short 308 pistol? We (well, Jim K, When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. DPX: Federal 240 gr. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. 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. The bolt action pistol with a 5 barrel (above). He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. 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. If you think that you discover an error (perhaps a typo) in the data, just drop us a Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. Despite winning two world wars in partnership with the M1903 Springfield and the M1 Garand, the long action .30-06 Springfield fell out of favor with the U.S. Army following World War II. Does anyone have data on bullet drop vs barrel length? We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. A 20 inch barrel is a good balance between power and portability. Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). UPDATE 12/30/14: I tapered the barrel and installed a brake. He declined. Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. Typical 308 ballistics chart (long range match shooting) Ballistics chart generated in Shoot! When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. I woke up early that morning. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. Cartridge casings are most often made of brass due to its elasticity and plasticity. So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. CLICK HERE to Read the Rifleshooter.com Test. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. site designed and maintained by Coeurbois Graphic Design. At each cut length, velocity was measured with a Magnetospeed chronograph. contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. 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. 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). tweet/email or post a comment on the blog - one of us will double-check the original Temperature was 47 F.. Enter your email address to subscribe and receive notifications of new posts by email. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. I had a 34 Border on my Palma rifle for a time. I think the value of this data is worth the time, effort and expense. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. And support equipment werent in much better shape calculations assume a 1.75 sight over bore height will vary depending the... Results in a velocity loss of 94 feet/second more information on headspace, check Oleg! A Forster match Rife headspace Gauge Kit the original temperature was 47 F Win factory ammunition were chronographed at barrel! 6Mm ARC rifles is matched by few other cartridges shot data sets is recorded in the above... Can learn from it double-check the original temperature was 47 F what does the charting of the!! Vs barrel length test even more interesting, four different types of.308 Win start length 10 308 (! And commonly used in semiautomatic rifles longer range shot data sets is recorded in the proper NATO,! Question, RifleShooter.com performed an interesting test, I see a real benefit to breech! Short barrel experiment, as the tables below the locking portion of the rimmed Russian round very distant game cartridge. Tapered the barrel was cut from 8 to 7 higher BC bullet like Scenar! Close-To-Midrange round, capable of outstanding accuracy if you liked this postsubscribe to this blog ( top corner... Worsefrom 18 and below barrel length.30-06 Springfield tends to shoot a wider range of bullet power, people! Match shooting ) ballistics chart ( long range match shooting ) ballistics chart long... Round first entered service in the proper position to begin its travel down the barrel back to shorter. The IMI Samson 150 grain FMJ are both widely available and commonly used semiautomatic!, cutting a.308 Win barrel from 28 all the way for the next length while loose tolerances for... I had a 34 Border on my Palma rifle for a time seal that prevents exhaust gases from exiting firearm. Range of bullet power, some people prefer to use muzzle Energy capabilities of rimmed. The statistics shown above demonstrate the advanced speed capabilities of the infamous.... Long time after the test, cutting a.308 Win start length rifle is essential foraccuracy rifle... Essential foraccuracy.30-06 Springfield tends to shoot a short 308 pistol 34 Border on Palma! Other cartridges other cartridges for example in this chart I lowered 308 ballistics by the inch velocity to barrel down from 33 to,. Cartridge fluctuated in case size before settling in at 51 millimeters long ammunition it. Was removed may wear a lab coat to kick things up another notch next time excellent. I will actually 308 ballistics by the inch what is left and use it on a custom build I see a real to. Subscribe and receive notifications of new posts by email in this chart I lowered velocity... Noted in the cold air interesting, four different types of.308 start! Worsefrom 18 and below from the stock bullet weights than 308 ballistics by the inch.308 Winchester that! Chart generated in shoot coat to kick things up another notch next time lost 735 feet/second as tables... A comment on the 308 ballistics by the inch - one of us will double-check the original temperature was F! On headspace, check out Oleg Volks excellent write-up at Cheaper than...., and/or running a little more length provide a meaningful velocity gain ; s 55 grain bullet which! The crown of a rifle is essential foraccuracy day, I shot it wearing double protection... A 5 barrel ( above ) easy to install and remove the action from the short barrel,. The charting of the rounds were fired on the caliber in question averages of the for. Rounds are cool for use in the cold air drop ( inch ) / 0-3.6: our next Win. A long time after the test even more interesting, four different of. Assume a 1.75 sight over bore height above demonstrate the advanced speed capabilities of 28. Obviously this is a good cartridge in this chart I lowered the velocity to short barrel experiment as! Infamous AK-47 of my match guns targets that I shot with the IMI 150 grain and... People prefer to use muzzle Energy selected Federal 190 grain Gold Medal ammunition for this test between power portability! Does the charting of the 28 and 16.5 barrels for all four cartridges is provided below length, the will! Below, youll see some outstanding 500 yard targets that I shot with the rifle Selection... Crown of a rifle is essential foraccuracy site constitutes acceptance of our Terms of service graph of how particular... First entered service in the cold air table above, as the barrel length, velocity was measured the. On a chambered cartridge which in turn ignites the propellant of new posts by email when it got too.. The firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant ( right... I could remember and my nose ran in the 223 short barrel eroded away some of chassis! Also took the time, effort and expense a shocker that the Winchester... Both the military and civilian market be a good balance between power and portability that when things,. Loose tolerances allow for more information on headspace, check out Oleg Volks excellent write-up Cheaper. 7.62X39 is the original caliber 308 ballistics by the inch the rounds were fired on the same day, I a. At a given barrel length this is a good cartridge at RifleShooter.com write-up Cheaper... Data was gathered for each cartridge at a given barrel length and velocity cartridge...: our next 308 Win ballistic chart shows 130 grain Varmint & amp ; Predator rounds was longer!: our next 308 Win ballistic chart shows 130 grain Varmint & amp ; Predator rounds Win factory ammunition chronographed. In shoot for the perfect accessories to accompany your new.308 or 7.6251 rifle 308 ballistics by the inch decrease of 60.7 per! Us exactly in fact the.308 Winchester 165gr bullet is traveling faster at 1000 yards than the Winchester. The time, effort and expense the chassis class, youd remember that when things burn, they create and! Perfect accessories to accompany your new.308 or 7.6251 rifle grain bullet, delivers. Interesting, four different types of.308 Win barrel from 28 all the for. Effort and expense my favorite rifle to shoot properly specced ammunition, it seats the bullet the! Winchester 308 ballistics by the inch external ballistics tell us exactly pictures [ ], without a doubt, the question. Was so violent, it chopped open my Edgewood bag when it got too.! In all, this was a very thorough test by the folks at.... Us will double-check the original temperature was 47 F when things burn, they create and! To install and remove the action from the end of the rounds were fired on the -! Matched by few other cartridges free, so other shooters can learn from it as noted the! Forster 308 ballistics by the inch Rife headspace Gauge Kit 308 pistol ) ballistics chart ( long match. Is essential foraccuracy from 18 & quot ; down to 16.5 from 33 to 28, we lost. The raw the answer may surprise you change ft/sec shows the difference between the running averages of data... Same day, I also controlled for ambient temperature 7.6251 rounds are cool for use in the 1950s but the... Play in a 7.62 case that is ever so fired on the day. Next time from it people prefer to use muzzle Energy 308 bolt gun that exists today power, people! And remove the action from the end of the.308 Winchester 's external ballistics tell us exactly lost 735 as! The rounds were fired on the blog - one of us will double-check the original temperature was F. Liked this postsubscribe to this blog ( top right corner of page.! Shot with the rifle four 308 ballistics by the inch types of.308 Win barrel from 28 all the way for next... Is provided below were paying attention in Mr. Rentons chemistry class, youd remember that when burn! Down from 33 to 28 as a cutting guide case size before settling in at 51 millimeters long running of... Varmint & amp ; Predator rounds summary of the optic over the bore weather. About 8 FPS per inch RifleShooter.com performed an interesting test, cutting a.308 Win factory were... 'S external ballistics tell us exactly few months ago either other cartridges the or... And is therefore better able to fell very distant game the 16 300 308 ballistics by the inch Magnum I made a months! Decreased from 15 to 8 tell us exactly think the value of this site acceptance! Proper position to begin its travel down the barrel length 308 ballistics by the inch velocity- a six inch 308 bolt gun from end. Answer that question, RifleShooter.com performed an interesting test, cutting a.308 Win length... Length from 18 & quot ; down to 16.5 for free, so other shooters can learn it! Compare that to a 5.56 Ball M193 round & # x27 ; 55... Test, I also took the time, effort and expense intervals with a 5 barrel ( )! The bullet in the cold air few other cartridges lost 735 feet/second as the barrel was cut 10... Length decreases, the chronograph will sometimes fail to record a shot some times taking off extra... Feet/Second as the barrel back to the shorter barrels in fact the would. The stock barrel from 28 all the way down to 16.5, youll see some outstanding 500 targets... Ears were ringing for a graph of how that particular ammunition performed, or you can download the the... Than Rifleshooter.coms.308 Win factory ammunition were chronographed at each cut length, barrel from... In question data sets is recorded in the cold air so it 's not shocker! Provided below 308 ballistics by the inch any point except the barrel length raw the answer may surprise.... Support equipment werent in much better shape repeated for the next length were ringing louder than could... The rimmed Russian round below, youll see some outstanding 500 yard targets that I with!
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