- Joined
- Jun 9, 2023
- Messages
- 25
- Reaction score
- 29
I got about a half dozen old inline rifles off Gunbroker to do powder testing and general plinking with. Totally random lot bought because they were all under $100.
They came with anything from 1:20 to 1:32 twist. Why does it vary so much? That 32 twist rifle has deep grooves as well, seems to have ben intended for plain lead bullets and not sabots. According to the formula I have I can't put more than 20 grains of powder in those 20 twist rifles without the projectile stripping off the rifling (or use "Golden Powder" which is about half the strength of black). The 32 twist rifle I can actually use for serious shooting. The rest of mine are all 28's and its kind of a toss up.
They came with anything from 1:20 to 1:32 twist. Why does it vary so much? That 32 twist rifle has deep grooves as well, seems to have ben intended for plain lead bullets and not sabots. According to the formula I have I can't put more than 20 grains of powder in those 20 twist rifles without the projectile stripping off the rifling (or use "Golden Powder" which is about half the strength of black). The 32 twist rifle I can actually use for serious shooting. The rest of mine are all 28's and its kind of a toss up.