I want to shoot the hammer 128 in a .257 Weatherby. It needs a 1-7 twist for the bullet. Has anyone done this or would the speed just mess everything up?
Fast twist .257 Weatherby
- Thread starter Dmagna
- Start date
Help Support Long Range Hunting Forum
Andrew Massi
Well-Known Member
Check out the blackjack 131 thread. You should be fine
Contact hammer about the twist. A wby case pushing 3400fps is a lot different than a 257 Roberts going 2900 fps. I bet you'd stabilize with a 7.5 or 8 especially if you're at any elevation. 131 ace at wby speeds goes well with 8 tw, bc is excellent at close to 350g7 and it kills well.
The ace isn't a hunting bullet though. That was the problem
Plenty of kills documented with it. Kills like a Berger.
snox801
Well-Known Member
I love that idea. If I did t only have 200 rounds down my bee it would get a 1/7 and do the same. That would be amazing
86alaskan
Well-Known Member
I'd say use a 7.5 twist. You'll get what you're looking for for the 128 Hammer, and the 131 will shoot too. Don't worry about the 131 not being a "hunting" bullet, it kills very nicely. I took a heavy white tail buck this last Saturday at 380yds. the bullet entered the near shoulder, expanded on the blade and blew up the lungs. a small piece of the shrapnel cut the inside of the far side ribs, but otherwise the bullets stopped completely within the animal. Impact velocity was approximately 2450fps and the deer soaked up 1800ft/lbs of energy. I'd call that pretty much ideal performance. The near side shoulder showed that the bullet clearly penetrated about 1.5-2in before opening, which kept it from totally destroying the shoulder. Use the ACE and don't worry.
