SKULLANDCROSSBONES65
New member
G'day.
I have found load data for Sierra #1385 40gr HP. with a twist rate of 1:8 @ 3500 f/s. Zero at 42m, +/- 1inch out to 185m.
The #1200 & #1210 are light jacket projectiles so you could be on the money about the twist rate for them.
I think anything under about 50gr would probably fly apart at the muzzle.
I have found load data for Sierra #1385 40gr HP. with a twist rate of 1:8 @ 3500 f/s. Zero at 42m, +/- 1inch out to 185m.
The #1200 & #1210 are light jacket projectiles so you could be on the money about the twist rate for them.