The RCBS AmmoMaster .50 BMG Ram Priming Unit (brand part no. 88772) is a dedicated priming attachment built specifically for reloaders running .50 Browning Machine Gun cases through the RCBS AmmoMaster press. It holds the oversized .50 BMG case in a shellholder mounted at the top of the press ram, letting the reloader prime a case in a matter of seconds rather than wrestling with a hand priming tool sized for smaller cartridges. Because .50 BMG brass is too large for most standard priming setups, this ram priming unit exists specifically to make the AmmoMaster press capable of handling the cartridge’s priming step cleanly and quickly.

Key Specifications

• Built for the RCBS AmmoMaster press mounts to the AmmoMaster ram specifically for .50 BMG priming.
• Shellholder at the top of the ram holds the oversized .50 BMG case securely during priming.
• Primes in seconds speeds up an otherwise slow step when reloading .50 BMG on standard-sized equipment.
• Shipping weight of 0.7 lb gives a quick reference for order weight and shipping planning
• Purpose-built for oversized .50 BMG cases solves a priming step that most standard-sized hand priming tools cannot handle.

Frequently Asked Questions

Does this unit work with presses other than the AmmoMaster? No, it is designed specifically for use with the RCBS AmmoMaster press when reloading .50 BMG cases.

Why does .50 BMG need a dedicated priming unit? The case is too large for most standard hand priming tools, so this ram-mounted shellholder lets the AmmoMaster press handle priming directly.

Buy the RCBS AmmoMaster .50 BMG Ram Priming Unit

Order the RCBS AmmoMaster .50 BMG Ram Priming Unit from RCBS to keep your .50 BMG reloading sessions moving. Pick it up from our Lubbock, Texas gun shop. Browse our reloading presses lineup for more.