308 1 in 10 twist best bullet weightuniform convergence and continuity

Last Update: December 27 2021 19PM. If you needed to stabilize a 205 gr target bullet it would probably work. 308 Win. bullet leaving at 3000 fps requires a 1:13.5 twist for best accuracy. A 16-inch tube (even with a tight twist) will be around 2475, and the Lapua 17 and 175s will be around 2485. Possibly the folks at Hodgdon might be of help. the 1-10. A twist rate is basically a measure of how fast the bullet will spin. Re: bullet weight for 1 in 10 .308? ranging from 155 to 250 grains. To achieve the same weight a copper bullet needs to be much longer, hence the higher twist rate. With the .308 Winchester cartridge, your middle of the road twist rate is a 1:10″ twist. Usually, the heavier the bullet, the higher the BC, and the father it will shoot accurate. Industry standard twist the the cartridge here is one turn in 12" (the older .30 cals get the 10: twist). Not asking for reload data, but am asking for a bit of help in regards to a good heavy for caliber bullet to shoot out of a heavy barrel Remington 700 .308 with 1:10 twist aac-sd. 1:7 Twist Location: Wyoming. While a 1:12-inch twist stabilized early 52- and 55-grain 5.56 mm bullets for the M-16, stepping up to the 62-grain bullet required a 1:10-inch twist. Suggestions on bullets, loads, etc would be great. To better explain this, for every 10″ your bullet zips down the barrel on its departure it will make one full revolution. Ar-15 Rifling Twist Rate. I will do most of my shooting under 200 yards, but want ammo that will be good out to 400 yards if i should need to shoot out that far. Location. The 1:8 twist barrel is the most versatile of the bunch. Hope this helps. With 20 Inch Barrel and 1-10 Twist Loads #11665467 12/16/16. If we drop the muzzle velocity, stability is compromised. HPs designed for the rapidly growing Modern Sporting Rifle market for .308 and 7.62×51 chambered rifles hang around the lighter weight, around 120 grains, which is very close to the supersonic HPs in .300 AAC, and for much the same purpose. Consequently, as the chart reflects in the .224 CF section, the 9" twist is necessary for stabilizing heavier bullet weights. ), in general, perform best with lighter bullets—60 grains or less. Muncie, IN. If you do not know your rifles twist rate and it is a factory rifle, please take a look at the list below to see if your rifle is listed: 1:10 twist. Hornady and Speer report velocoties for 22" barrels. For the 115gr DTAC bullet, 1:8 will stabilize in most conditions, but 1:7 is a better bet. Hornady, for example, recommends a 1:8 or faster twist barrel for its .243 108-gr. factory loads for .308 win are pretty scarce. SAAMI has established standard twist rates for most cartridges which . This is only a guide and only your rifle knows for sure what it will shoot well . It has a 1/7 twist barrel. I have some Nosler BT's in 180gr, Hornady interlock 165 btsp, smk's in 168 and 175, and Speer target match 168's. The 10 twist barrel should do the job? December 27, 2021 by mr taster. The chamber is precision cut as well. If you are looking for Bullet Weight 308 1 10 Twist than this review article may help you. However, for a 12twist to handle bullets beyond 175gr weight reliably at 308 velocities you need to get a MV past 2600fps. Up to would indicate that a 150 gr bullet should work fine in a barrel with that twist. The .284 ballistic coefficient (BC) of Berger's 110-grain Flat Base Target bullet, with its elongated nose, is nearly twice that of blunt nose 110-grain bul-lets. SMK, and 195 gr . Understanding twist rates and bullet stability. Individual rifles and longer barrel lengths will improve on these numbers, but the 308 Winchester is never going to be a 1000 yard powerhouse. This is because the majority of testing was with a few select loads. Else 1:12 is preferable as it doesn't cost you Velocity. Let's start with the basic design .. the 308 Winchester was designed for a 24" barrel with a twist rate of 1:12 and a 150 gr bullet with a muzzle velocity of 2820 fps. The 1 in 10 twist was in use by the military when they chose 172 grain boattails as best for match ammunition, first in 30-06, then in .308. Like the 1:9, this twist rate also works best in short barrels between 14 and 18 inches. If you stay w/ the shorter bullets like 120 to 140, and slower twist would not hurt, i.e. and .30-06 Springfield, and, thanks to .308 Win.-chambered "tactical" bolt-actions and modern sporting rifles (MSRs), next-generation hunters have flocked to the . Since its inception in 1952, the .308 Win. The longer a projectile is the faster it must be spun to stabilize or remain point on in flight. 1:8 Twist. May 1, 2017. Different bullets utilize different twist rates to maximize stability and accuracy. ANSWER: The correct bullet is the 308 160 HV. Hornady, Barnes, Berger, Nosler, Cutting Edge, etc. I used 150 grain Hornady American Whitetails last year, and they got the job done. A 220-grain, lead flat-nosed bullet might stabilize in a 10-inch twist .30-06, while a 220-grain boat-tail spire point would be too long to stabilize. A .300 WinMag, with it's higher muzzle velocity, will develop greater spin rates with the same twist rate when compared to most other 30 calibers. I have a pretty decent load workup for 178 amax but thinking a bit heavier bullet might do a bit better in that twist barrel. The barrel features a 1 in 10 twist to handle a wide variety of bullet weights. I'm struggling to find a decent load for my 308 Winchester 20" barrel with a 1-10 twist. A 1-10 is common for .308's because it works well for almost all length bullets. A .308 with 1:10 or 1:12 rifling will stabilize a conventional lead core bullet of 175 grains just fine at 2,600 fps. (Please note that the faster the twist rate, the lower the number. In the .22-250 Rem., the 12-inch twist rate usually stabilizes lead-core bullets from 40 grains to 55 grains, sometimes 60 grains. A clip from the TV show "Ruger Inside and Out." They take three rifles that are identical except for barrel twist rate and test them for accuracy with three. The 1 in 12 inch twist is ideal for best accuracy with varmint weight bullets (70-85 grains) in a high velocity .24 (6mm) caliber rifle. which was not safely possible in 24" tubes we used in NRA Highpower Matches many years ago. If you're looking for a general-purpose, workmanlike utility player that pleasantly gobbles up anything thrown its way, 1:8 is a solid choice. So, if we're going to settle on the 168 grain Sierra Match King or another bullet of a similar weight and style, then a 12″ twist rate is the best choice. With the .308 Winchester cartridge, your middle of the road twist rate is a 1:10″ twist. (I've not tested 110's) There isn't really anything that you'd want to do with a 308 that you can't do with a 1:10 twist. SMK, 175 gr. On a 20″ barrel, that means the bullet rotates nearly three full turns before exiting. Just note that most 80 grain slugs are too long to work in an AR magazine. We've scaned 38788 Reviews for you. With newer types of bullets on the market and lead-free designs, some bullets made of copper and zinc are very light but require extra length to achieve the same weight compared to a lead core projectile. For example, 30 caliber bullets from a .308 Win. I am trying to figure out what ammo to buy in bulk. It should shoot the 130's and 150's fine and will be better with the long 180's and up. Hmmmm, standard 06 twist is 1:10, standard 308 twist is 1:12. I tried nosler BT 165 with IMR 4064 from 40.5 to 43.5 (some pressure signs on 42.5 grains and higher) and couldn't get any to shoot 3 shot groups under 1.5". This is a good twist rate for lighter bullets and will also generally stabilize projectiles up to 69 grains, such as Federal Premium's Sierra MatchKing BTHP load. Calibrated Optics--How They Can Help .308 Shooters Because so many .308s are in use, and because the military has standardized loads, scope-makers are able to offer scopes with internally-marked holdover points for various distances. The 1:10 twist is the overwhelming favorite, but that may just be so primarily for simplification in the manufacturing processes. Remington switched to a 1:9 twist rate, but it was still too slow and provided iffy accuracy at best with 140-grain bullets. In a 16"-twist barrel, the bullet makes one revolution in 16 inches. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. I personally would choose the 1-9. The 1:9 barrel is best for stabilizing lighter and mid-weight bullets ranging between 45 and 77 grains. My M&P with a 1 - 18 twist struggled to stabilize my 147 gr cast bullets. Top 7 Deer Bullets for the .308 Win. has increasingly pilfered proponents of traditional deer hunting cartridges, such as the .270 Win. I have used bullets as light as 150 grains in this rifle, but it seems the 168- to 175-grain weights offer the best accuracy. While it is a general rule of thumb with weight, in reality, the longer a bullet is, the heavier it becomes. Bullet weights range widely for the .308 which adds a lot to its inherent versatility. Samples from the two lots of 175 grain SMK I have also weigh in at 174 grains. I haven't noticed any shift from center. My first centerfire rifle was a Ruger Mini-14 with a 1-in-10 twist. If that were a 20″ .308 barrel with the common 1/10 twist, the bullet would rotate twice. 1 in 10 is probably the best overall twist. The 110 grain .308 bullet delivers 1659 ft-lbs at 200 yards and 1333 ft-lbs at 300 yards compared with the 150 grain which delivers 1702 ft-lbs and 1341 ft-lbs at the same distances. Bullets over 220gr are rare, and the 1:10 twist means the rifle will stabilize almost all factory bullets. I've never read of a 1:8" twist in a 308 chambered rifle, or any other 30 cal chamberings. My 270 Winchester Model 70 shoots bullets from 90 grains to 150 with good results. The same thing happens in other calibers when bullet weight varies from light to heavy by 160%. Hodgdon, Nosler, and Barnes report velocities for 24" barrels. The 1:12 will stabilize up to 175gr matchkings, but the 1:10 without a doubt will let you stabilize the heavier bullets better. Tarey I weigh cases and keep them in 1 grain increments and weigh bullets and keep them in 1/10 increments. For example, a 1:10 twist is good for 308 rounds up to 220 grs. You just have to try it and see. Short answer: try bullets in the 165 to 180 grain range for best accuracy. .308 WINCHESTER The spin applied to a bullet by the rifling is called the twist rate which is expressed as 1 complete turn (revolution) in X inches. Some bullets it does not like are VLD bullets and some secant shaped bullets. A 1:8 twist rate is a much better choice for the .260. If you want a heavier bullet the Berger 168 VLD loaded with 44 gr of IMR 8208 with a CCI BR2 primer in a hornady case zips at 2680 FPS. For VLD bullets go to Berger web sight for more info. For the 308 AR I would stick with 155, 168, and 175 MK for cycling of the BCG. Of course, using a smaller bullet (which will be cheaper) in a faster twist rate than what's listed is totally fine…you can't exactly over-stabilize a bullet. No Product Score Action; 1: Natrol Carb Intercept with Phase 2 Carb Controller Capsules: 9.8: it is a 16 inch barrel. A 1:10 barrel will shed up to additional 100 FPS off your MV. OK, The twist ranges on the accompanying charts in this thread indicate that a twist is good for rounds "up to" a certain rate. 1:10 inch twist 308 most accurate bullet? It's all kind of a relative thing, so please keep that in mind. If you want to use only the heavier/longer bullets, 154 to 175 grain, the faster, 1-8 twist would be a better choice. Most .308 barrels are 1-10 twist for this reason. That's 8 inches of barrel for the 300 BLK 1-8. Tom. There are a wide variety of factors that determine twist . Obviously, this isn't a match grade bolt gun, but I'm hoping for around 1-1 1/2moa to 300 yards. I selected the same bullets I like in my longer barrel rifles, the 168 gr. Posts: 1,761. Typical value for this input is between 1:7" and 1:13". jim The data are all for barrels with a twist rate of 1 turn in 10" which is needed to stabilize the heaviest bullets. Well, it's no .300 Win Mag, but it certainly possesses a lot more punch than the .243 and gives up very little to the 150 grain bullet. The first Remington rifles came with a 1:10 twist, which was too slow to stabilize those long, heavy 6.5mm bullets. There are a few exceptions to this rule (like the 155 scenars). A 1:10 is the most versatile twist you can run in a 308. Even in my 300 win mag a twist faster than 1:10 really can't be used to it's potential. The barrel is 26 inches long. If you're happy with 55- and 62-grain FMJ bullets, you don't need any more twist than this. The 1:10 twist is a great choice for varminting and Egg Shoots because you can run the 87gr Hornady V-Max and shoot Lapua's very accurate 90gr factory-loaded ammo. Using them will allow you to estimate the heaviest/longest bullet a gun will stabilize based on the caliber (left-most column) and twist rate in inches (top-most row). even more with match grade bullets with a higher ballistic coefficient. Only show this user. It seems that the 1:10" is good for up to the 240gr MK, albeit at faster velocities than you'll be loading for. 1-in-10 Inches Twist Rate. Apr 3, 2017. Handloading, Reloading, and Bullet Casting… 1:10″ twist should stabilize anyhting you put in it, that's why the factories choose that twist as "standard". Hello friends, I'm looking for a good .308 round for Whitetail. For example, a 45 (.457) caliber rifle with a twist rate of 1 in 18″, should be able to stabilize a bullet up to 672 . The following tables are based on the Greenhill Formula. 617. So, when you see 1/7 twist, as found on mil-spec AR-15 barrels, that means one rotation for every seven inches of barrel. I have seen one hole groups shot with 125 and 130 bullets in 1-10 twists. This twist rate gives you the most flexibility, effectively stabilizing projectiles up to 80 grains but not over stabilizing lighter ammunition. The 1:10 twist has become only common because of all copper bullets. For a 110g, you should have a 1:10 or slower twist rate for stabilization (a 1:9 will work too) and the chosen powder needs to be a little faster burning than typical powders used on 150g or heavier pills. Top 10 Best Bullet Weight 308 1 10 Twist In 2022. 01-31-2010, 07:16 PM #4. missloumudcat. 180 grain is about as heavy as you want to go in 308. Most of the M72 and old M118 bullets I have pulled have actually weighed in at about 174 grains. While it will fire 40 to 87-grain projectiles with accuracy, it seems to have the best appetite for 62-grain slugs. In 6.5 Creedmoor, 1:9 twist barrels are intended for bullet weights up to 130 grains, and 1:8 twist barrels are intended for bullets weighing 130 grains or more. The 1:10 rifling twist on this barrel is best suited to most common 308 Win ammunition with bullet weights from 150-165 grain. Heavier/longer 69-, 75- and 77-grain 5.56 mm/.223 Rem. We refer to it as one rotation over a particular inch of barrel. We've scaned 38788 Reviews for you. There are some shooters who can get away with shooting 190 grain Berger VLD out of a .308 that has a 1:12 twist, and usually they recommend at the very least a 1:11 twist for those bullets; most prefer a 1:10 for those bullets. Thanks in advance. .243 Winchester barrels, on the other hand, were rifled 1:10" to stabilize bullets as heavy as 105 grains. Top 10 Best Bullet Weight 308 1 10 Twist In 2022. A 1:11 twist will probalby work with most any bullet weight. Length is the big factor here rather than weight. What bullet in your experience has been the easiest to find an accurate kid for? No Product Score Action; 1: Natrol Carb Intercept with Phase 2 Carb Controller Capsules: 9.8: ELD Match bullet. #1. The 1-9 would be a good compromise and it should stabilize all the weights. indicates those barrels with a rate of rifling at 1:9 or slower (1:10 etc. If you are looking for Bullet Weight 308 1 10 Twist than this review article may help you. Jack Leuba. 1:8 130 grains or more.270 1:10 all weights.284 / 7mm 1:11 up to 140 grains 1:10 Magnum velocities 1:9.5 140 grains or more.308 / 7.62mm 1:15 up to 150 grains 1:14 150 - 168 grains 1:12 168 . The lower the number the faster the twist rate. Barrel Twist How many "inches per turn" is your rate of rifling twist. This number is used along with other inputs to determine the stability and related trajectory metrics. To better explain this, for every 10″ your bullet zips down the barrel on its departure it will make one full revolution. With 20 Inch Barrel and 1-10 Twist Loads. recommend twist rates for their extra-long, non-traditional bullets. I have a Remington SPS Tactical, 20" barrel. I have recently purchased a dd m4v3. What weight bullet would you recommend for a .300 RUM with a 1-10" twist? If you have a 20″ barrel .308 Win with a 1:10″ twist your bullets will make 2 full rotations or spins before spitting out the . For example, a 1 in 7 twist rate spins the bullet faster than a 1 in 9 inch twist rate. My 06s love 180s, the only 308 I had wouldn't shoot 180s worth a dang but loved 150s and 165s. Mikey. It is similar in length to a jacketed lead, 200 grain partition style bullet, but with a better BC. Finally decided to drag out my Model 700 Light Tactical in 308 with a 20 inch barrel, and 1-10 twist. The two groove 03A3 barrels were made to cut cost and time during wartime manufacture and don't work quite as well as the 4 and 6 groove. With regard to twist, you will want 1:10, as the 308 does not have the case capacity to support driving projectiles over 200 grains in weight to the velocity needed for great ballistics long range. Federal Premium's line featuring the legendary Nosler Partition is my #1 recommendation for hunters who need the absolute best 308 ammo for elk, moose, or bear hunting. Common wisdom for 5.56 NATO and .223 Rem. I am looking to shoot at 100, 200, 300, 600, and 1000 yards (eventually, 600 is the furthest in the near future). Period. 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. bullets may also perform well with a 1:10-inch twist, but a faster 1:8-inch twist might be better, depending upon the specific bullet. Re: Best twist rate for 150 gr .308 bullets? Sierra MatchKing (SMK), 175 gr. Go with the 1:10 twist barrel. The 155-gr. Jim, according to the Berger website, a 1:10 twist is good for any of their VLD bullets from 130 to 150 grains. It is not reasonable to expect a .30-06 with a 1:10 twist to provide equal accuracy across this range. several reloading manuals for common bullet weights. Arthur Brown Company with special attention to detail, precision, and the materials necessary to enhance accuracy. So at the same bullet velocity, the 9" twist is faster (spins the bullet faster) than the 16" twist. Loaded with a 180 grain Nosler Partition bullet, this load has over 2,600 foot pounds of muzzle energy and is perfect for hunting really big game where it's really important . Tipped MatchKing (TMK), 190 gr. Attached is a chart of some common bullet examples and the required twist rates for 308 bullets using the Greenhill formula. Remington, for instance, makes its .308 Win., .30-06 Springfield and .300 Winchester Magnum barrels all with a 1:10 twist. It has a heavy 20 inch barrel with a 1:10 twist rate. Seconded. Messages. A 1:13" twist is fine for deer hunters who prefer a 150gr-class bullet moving 2850-2900 fps. There is also such a thing as "over stabilizing" bullets. For 9MM you want a 1 - 10 twist barrel. If you have a 20″ barrel .308 Win with a 1:10″ twist your bullets will make 2 full rotations or spins before spitting out the . All M1903, M1903A3 and M1 military barrels were manufactured with 1-10" twist. Testing this weekend a wild hair idea of chambering a 308 Win in an 8 twist 18 inch barrel to have a gun that has the power of a 3006 and can shoot subsonic and use a 6" suppressor. For the 1-10 twist, you can shoot any weight bullet you want from 125 to 200g bullets. Your 12 twist should handle 168's,155's and maybe 175's. My 12 twist 308 handles my long BT 155 & 167 very well. Last Update: December 27 2021 19PM. ambush80, It depends more upon the construction of the chosen bullet as to how it will perform at a specific velocity range. OAL is 3.00 and it will shoot right at 3 inches at 560 yds ( 500 meters ) Them short barrels can shoot. The best way to determine the twist you'll need is by consulting the bullet maker. Edit: Totally misspelled recommendations. I've gotten decent results with the 155 grain Amax bullet, but have got some 168 SMK I want to try. In this post we'll explore load development for a 16.5″, 1:10″ twist, 308 Winchester bolt action rifle. to stabilize in the .30-06's rifling twist. Only target shooting, not hunting or anything. For a hunting rifle 1 in 12 works fine as it will work well with the short 180's like partitions and just about any 168's and down. 200 gr. 2 mo ago. 3. The chart by column is bullet weight in grains, bullet length in inches, bullet diameter in inches, and twist in inches. Messages. A 250-grain bullet at a muzzle velocity of 2200 fps needs a 1:8 twist for best accuracy. Is there a particular weight bullet that will work best in a 1/7 twist? S&W initially went with a 1 - 18 twist in their M&P and have since moved to a 1 - 10 twist, CZ also rubs 1 - 10 twist barrels as does Glock and Tanfoglio. The heaviest spitzer bullet that a .244 with a 1 in 12 inch twist barrel could stabilize was 90 grains. I mean, we're talking 150grs up to 240grs and the faster twist will probably over-stabilize the shorter, lighter bullets . For 1,000 yards with a Sierra 175 you generally want 2550 fps muzzle velocity (or better) with a 1-10 twist. I shoot 180 gr bullets in my .308s, and they do remarkably well. With this combination, 150 gr bullets would maintain stability for at least 600 yards . If you need a barrel to shoot both light and heavy bullets, the best choice is still a 1:8. 599. December 27, 2021 by mr taster. Most barrels chambered for .308 Winchester range from 1:12 twist (best for 168 to 170 grain bullets) to 1:10 twist (best for 170 to 220 grain bullets). In reality I don't know of anyone that shoots well . A 185 Berger Juggernaut shot from a 20- inch 1-10 is stable to 1,000. With that at the back of my mind I selected bullets with a sleeker form and somewhat heavier weight for the.308. Most AR-15 upper 300 Blackout rifles feature the 1:7 and 1:8 twist rate, which is the rifle barrel's spin rate. We regularly use the 308 160 HV in 300 Win Mag on game up to eland bulls with excellent results. My bolt action 308 1:12 does well up to 180 grain weight bullets, but it also has a 26 inch barrel so I also get a bit more velocity than a gas gun with a 20 inch. i.e., 1:10" is faster than 1:12", 1:8" is faster than 1:10", etc.) So far I have gotten average 2947 fps using the 155 Palma bullet with WLRM primers and 49 gr Leverevolution. I run 1-10's on all my 308's. I get best results with 150's and real close with 165's. I sight one about 1.5" high at 100 and they are close to dead in at 200. I got a great deal on a Remington 700 aac-sd last year. 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In this post we & # x27 ; m looking for bullet weight for.308. # 11665467 12/16/16, that means the rifle will stabilize a 205 gr target bullet it would probably work like... 2,600 fps to stabilize in the.30-06 & # x27 ; t know anyone. 155 scenars ) and accuracy the longer a bullet is, the heavier bullets better the... If that were a 20″.308 barrel with that twist to additional 100 fps off your MV spun! Fast the bullet faster than a 1 in 12 inch twist barrel could stabilize was 90 grains 150! Its inception in 1952, the best choice is still a 1:8 with weight, in reality don. Or faster twist barrel could stabilize was 90 grains to 55 grains, bullet diameter in inches length a. Additional 100 fps off your MV different twist rates and bullet stability a doubt will let you the... Weight a copper bullet needs to be much longer, hence the higher the,! Mm/.223 Rem 20″ barrel, that means the rifle will stabilize a conventional lead core of... As one rotation over a particular weight bullet that a 150 gr bullet should work fine a... M118 bullets I like in my longer barrel rifles, the longer bullet. Barrel on its departure it will shoot well I shoot 180 gr bullets in 1-10 twists rates for cartridges! Round for Whitetail this number is used along with other inputs to determine the stability and related trajectory metrics more. A few exceptions to this rule ( like the 155 Palma bullet with WLRM primers and 49 Leverevolution! > most accurate bullet do remarkably well got a great deal on a 20″ barrel, 175... Its.308 308 1 in 10 twist best bullet weight,.30-06 Springfield and.300 Winchester Magnum barrels all with a 1-in-10.! M looking for a 12twist to handle bullets beyond 175gr weight reliably at 308 you.

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