Airforce Best grain for .257 texan
- Thread starter Cole44007
- Start date
It depends on your setup. Usually something in the 70 to 100 gn range. I like the Griffin stuff.
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I cast my own .257. I feel this question falls into more specifically what lenght of ammo and weight will your twist rate stabilize and is most accurate.
I believe a common twist rate in .257 is 1-14 . That being said from my experience
1-14 stabilized 55gr to 92 grn.
Best accuracy came from 70grn and 61grn.
I have a noe hp mold that I had modified to cast 61grn....the most accurate ammo I've shot. 257420 in 73grn was also excellent.
Aresnal 85 grn Spitzer that I had modified to cast at 75grn was also excellent.
Aresnal 92grn noble was also excellent.
I preferred to shoot ammo in the weight that allowed the gun (depending on barrel lenght) to shoot 1005fps to 1010fps and have least amount of muzzle flip without guzzling air for reasonable shot count.
60 to 65 grain hp is my most preferred overall in a texan for power level, bc, shot count, etc
Muzzle flip plays a part in accuracy, shot cycle and the ability to keep scope on target.
I preferred 61grn at 1015 fps as the minimum grain weight to buck wind and offered least muzzle flip for the weight of the gun.
Now for a bench setup that was heavier setup I preferred 85grn as heavier bench gun would buck muzzle flip and heavier ammo would buck wind a tad better and offer better bc.
Ideally 90grn is best for ultra long range if you can keep speed 1000 fps or better and the gun is heavy enough to mitigate muzzle flip.
I believe a common twist rate in .257 is 1-14 . That being said from my experience
1-14 stabilized 55gr to 92 grn.
Best accuracy came from 70grn and 61grn.
I have a noe hp mold that I had modified to cast 61grn....the most accurate ammo I've shot. 257420 in 73grn was also excellent.
Aresnal 85 grn Spitzer that I had modified to cast at 75grn was also excellent.
Aresnal 92grn noble was also excellent.
I preferred to shoot ammo in the weight that allowed the gun (depending on barrel lenght) to shoot 1005fps to 1010fps and have least amount of muzzle flip without guzzling air for reasonable shot count.
60 to 65 grain hp is my most preferred overall in a texan for power level, bc, shot count, etc
Muzzle flip plays a part in accuracy, shot cycle and the ability to keep scope on target.
I preferred 61grn at 1015 fps as the minimum grain weight to buck wind and offered least muzzle flip for the weight of the gun.
Now for a bench setup that was heavier setup I preferred 85grn as heavier bench gun would buck muzzle flip and heavier ammo would buck wind a tad better and offer better bc.
Ideally 90grn is best for ultra long range if you can keep speed 1000 fps or better and the gun is heavy enough to mitigate muzzle flip.
Upvote 0