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Bmt85 wrote:1:24 is probably the most common, does great with a wide range of bullet weights. While a faster twist (i.e 1:16) isn't necessary, it hasn't seemed to cause a problem. Although, 1:16 may be a bit much for pistol bullets over a stout charge. Just know that increasing twist rate will usually increase pressure for the same load. Factory ammo shouldn't be a problem, though.
For just Factory ammo, I say go 1:24. Seems to do great for just about anything.
Bagel51 wrote:I agree though I'd bet the 1:16 twist barrels out there were developed using factory ammo as well and found to as you observed, not cause problems. For years, all we had was the 1:24 to experiment with and a lot of different loads were tested beyond factory ammo, both above and below 250gr. My first and last experience with a 1:16 did not go well, so I'm biased. Don't want to talk more about it than I already have. I do know a lot of bolt action enthusiasts are running the 1:16 and doing well by it. There were some 1:32 barrels available for a while from one of the member's company here at one time. Never played with one myself however, so I can't speak from experience. I can only say that the 1:24 has served me well and seems to be very forgiving.
Hoot
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