RCBS Shell Holder #37 - .416 Rigby / .450 Rigby / .500 Jeffery

The RCBS Shell Holder #37 is a hardened steel case holder designed for use in RCBS single-stage and turret reloading presses. Sized to fit a specific group of large dangerous-game rifle cartridges, it captures 0.125" of the case head for proper SAAMI headspacing and aligns the case with the reloading die during resizing and re-priming.

Shell Holder #37 is engineered for three of the largest commercially available centerfire rifle cases: the .416 Rigby, the .450 Rigby Rimless, and the .500 Jeffery. Like every RCBS shell holder, the #37 is machined to the industry's tightest tolerances and built from hardened steel for long service life under repeated reloading cycles. The simple drop-in design makes it easy to swap between cartridges when running a single-stage press, and RCBS shell holder numbers do not correspond to those of other manufacturers, so always verify fitment against the official RCBS Shell Holder chart when matching a holder to a new cartridge.

Whether you are loading for an African dangerous-game rifle or simply need the correct holder for one of these big-bore cases, the RCBS #37 delivers the precise case-head support required for consistent resizing and dependable headspacing on single-stage and turret presses.