- Joined
- Sep 23, 2011
- Messages
- 72
Your RCBS would probably work fine. If you look at the top of the press, you'll find a threaded bushing. If you remove the bushing, there a much larger threaded hole. I think it's 1.250-12. Originally, this hole was used for sizing dies for metalic 12ga shotgun shells. It takes a lot of muscle to resize a 50BMG.