OldIron86
Member
- Joined
- Jun 4, 2019
- Messages
- 20
First post on THR, sorry if this is similar to any other post. I bought a new Henry Big Boy steel .357 magnum about a year ago. I've hunted and practiced with it quite a bit since then, and have decided to reload for it. So I slugged the barrel, lands measured .3553 and grooves measured .3533. I'm not a master of the craft, but that is 9mm diameter? should I load .355 bullets or stick with .357?