Calvin45
Well-Known Member
Got my first round of test cartridges loaded up with my first ever hammer bullets tonight.
@HammerBullets @RockyMtnMT
257 wby. 75 grain hammer hunter. Treated with hexagonal boron nitride.
I'm starting with superformance. I have h4350 and h4831 to try too if this isn't the one.
Loaded up 18 cartridges in one grain increments kind of going blind so using a broad range to figure it out.
Lowest charge is 71 grains, highest is 88 compressed. Yes, superformance is a real dense ball powder and you can fit 88 grains into a .257 wby no problem.
Seated to the top groove and crimped as per @ButterBean instruction. Fed 215M primers.
Let's go!!!
@GLTaylor I'll keep ya posted for data once I actually get to shoot these.
@scope-eye my fellow speed freak I haven't heard from ya in a while, you doin okay?
@HammerBullets @RockyMtnMT
257 wby. 75 grain hammer hunter. Treated with hexagonal boron nitride.
I'm starting with superformance. I have h4350 and h4831 to try too if this isn't the one.
Loaded up 18 cartridges in one grain increments kind of going blind so using a broad range to figure it out.
Lowest charge is 71 grains, highest is 88 compressed. Yes, superformance is a real dense ball powder and you can fit 88 grains into a .257 wby no problem.
Seated to the top groove and crimped as per @ButterBean instruction. Fed 215M primers.
Let's go!!!
@GLTaylor I'll keep ya posted for data once I actually get to shoot these.
@scope-eye my fellow speed freak I haven't heard from ya in a while, you doin okay?