RCBS Shell Holder #46
If your shell holders don't securely grip the shell and firmly fit into the press during reloading, you're bound to have headspace and sizing problems. RCBS manufacture's shell holders to the industry's tightest tolerances, using only the finest steel.
Shell holder #46 fits:
• 470 Nitro Express 3- 1/4"
• 500 Nitro Express 3"