ml williford
Well-Known Member
Hello, I'm in need of advice. I'm going to have a 257 magnum built. It will be 26 inch proof barrel carbon fiber. Will be shooting 100 grain bullet. Plus or minus 10 grains. What is the best twist rate for this?
No sir, nothing heavier. How does copper change things?Probably 10 twist unless those bullets are copper. If you have any interest in shooting 130 classgo with 7.5!
Thank you sir.I'll go first. (Second) Your fastest (minimum required) twist might be for 110 grain copper bullet. Hammer hunter specifies a min twist of 8.25. Your slowest twist would probably be a 90 grain lead core. I'll bet you could go down to 10 twist but I'd aim for at least 9 twist maybe faster.
Copper bullets of the same weight require a much faster twist as they're longer then lead. So look at the bullet you're wanting to shoot as David said above, 110 hammer hunter specifies 8.25 twist minimum! So if planning to shoot copper in that range I personally would be going 7.5 twistNo sir, nothing heavier. How does copper change things?
10 twist to shoot traditional bullets up to about 120 grains.Hello, I'm in need of advice. I'm going to have a 257 magnum built. It will be 26 inch proof barrel carbon fiber. Will be shooting 100 grain bullet. Plus or minus 10 grains. What is the best twist rate for this?
.257 WBY? Mine is 1:7" built for the heavies; 131 BJ, 133/135 Berger, 134 Hornady ELD-M, 145 Black Hole, 163 Chinchaga, etc., but have no issues shooting 100-130 C&C bullets. Good luck!Hello, I'm in need of advice. I'm going to have a 257 magnum built. It will be 26 inch proof barrel carbon fiber. Will be shooting 100 grain bullet. Plus or minus 10 grains. What is the best twist rate for this?
Thank you for this info sir..257 WBY? Mine is 1:7" built for the heavies; 131 BJ, 133/135 Berger, 134 Hornady ELD-M, 145 Black Hole, 163 Chinchaga, etc., but have no issues shooting 100-130 C&C bullets. Good luck!