If your shell holder doesn't securely grip the sell and firmly fit into the press during reloading, you're bound to have headspace and sizing problems. RCBS manufactures their shell holders to the industry's tightest tolerances, using only the finest steel.

Specifications:

- Fits: 50 BMG
- Works for both 1 1/2" x 12 Die and 1 3/8" x 12 Die
- Please note that this shellholder is threaded for use with the Ammo master Press (and other presses that accept 7/8x14 " threaded shellholders) only.