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Anyone shooting a 8 twist .270 Win? If so, how does it shoot with 130’s & 140’s? It seems like the logical choice for 150’s, which is what I’m wanting to use primarily. My .270’s are all 11 and 10 twist which give great accuracy with 130’s, decent accuracy with 140’s, but unacceptable (to me) accuracy with 150’s. What have your experiences been with a 8 twist .270? All We Know Is All We Are | ||
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I dont know of any 8" twist .270w. Are you sure its the twist whats the problem? http://www.accuratereloading.com/270284win.html | |||
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Many barrel makers offer an 8 twist option for .270. I presume there’s a valid reason for that with regard to longer, heavier bullets. I’m looking for people who have first hand experience with 8 twist .270 barrels and their across the board performance. All We Know Is All We Are | |||
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6.8 x 51 or less type cartridges might have added to the faster twist demand. I would think the 8 twist would be fine with 130/140 bullets but have no experience. "The liberty enjoyed by the people of these states of worshiping Almighty God agreeably to their conscience, is not only among the choicest of their blessings, but also of their rights." ~George Washington - 1789 | |||
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The tighter twist (faster twist rate) is intended to stabilize the longer, heavier bullets. I don't think you can "over-stabilize" a lighter, shorter bullet. So, in theory, 1-in-8" twist should cover the entire range of bullets, all other things being equal. Of course, things are never equal, as different loads, rifles and projectiles interact differently. Doug Wilhelmi NRA Life Member | |||
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I've seen fast twist 270 barrels on 6.8 spc rifles setup for subsonic use. Bison Armory offers a 1-7" barrel. For a 270 Win meant primarily for big game, an 8 twist would probably make better sense than the 10" twist. "For they have sown the wind, and they shall reap the whirlwind..." Hosea 8:7 | |||
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You actually don't "over stabilize" them but the bullet imperfections are magnified with a tight twist using light and fast bullets. I know we are NOT talking about bench rest shooting here but those guys like the bullet right on the ragged edge on destabilized with slower twists... because they shoot better for them. If 8 twist was the best all around then that's what more guys would be using, and they're not...with their standard length/weight bullets. I've used lots of 129-130 weight pills in a 6.5 with an 8 twist but they're, again, longer than a .277 in the same weight. I'll bet an 8 twist would be just fine with a long 150 or bigger (170) bullet in .277. Zeke | |||
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I've been shooting 150g Partitions at 3000 fps out of my 60s vintage BDL in 270 Win for decades. It still shoots nickel sized 3 shot groups. If you are going up to Matrix 165 bullets or Woodleigh 180s 1 in 9" may make sense. I have a 270 Weatherby Mag I'm thinking of rebarreling with a Krieger 24" 1 in 9" twist bullets to shoot 165g bullets. I can still get 3100 fps with those out of my 270 Weatherby. For a 270 Win, I don't think it makes sense. Regards, Chuck "There's a saying in prize fighting, everyone's got a plan until they get hit" Michael Douglas "The Ghost And The Darkness" | |||
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I have a .270Wea using 1:8 twist. It shoots 110-130 grainers just well enough to barely make 1-hole groups at 100 meters. My old Lija barrel with 1:10 twist loved 180grains Woodleighs. DRSS: HQ Scandinavia. Chapters in Sweden & Norway | |||
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What you say makes sense. A shorter, lighter bullet, is just a bit off-center, would tend to show the effects of the lack of concentricity more with a faster twist. Doug Wilhelmi NRA Life Member | |||
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I feel so bad for you a rifle that barley shoot one hole groups should just be trashed. | |||
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I have a standard 22" Mod 700 Classic in .270W and "so far" it really likes 150 & 160 partitions. I get 2950 each ( 59gr N560/150PT and 60gr R26/160PT) Gee wiz, I could never beat 2950 with my 7mm Rem Mag and 160PT with IMR 4350. It didn't shoot well with either MRP or H870...the slowest I had back in 1980!  So.."to me" a .270 that mimics a 7mm Rem Mag is pretty awesome! Needed for deer? No. I have some 110TTSX loaded up to try out. I hope it likes them. | |||
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That's awesome! I've been shooting 150g Partitions at 3000 fps out of my 50 year old Rem BDL in 270 Win (22" barrel 1 in 10" twist). It's hell on elk, mule deer and black bears. Still shoots nickel sized 3 shot groups at 100 yards after many many rounds. Regards, Chuck "There's a saying in prize fighting, everyone's got a plan until they get hit" Michael Douglas "The Ghost And The Darkness" | |||
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 a light for cal. Bullet can readily fly apart when shot from an abnormally fast twist barrel.Been there. Done that.right roger  Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone.. | |||
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