RCBS Matchmaster Competition Seat Die Set, .22 ARC

The RCBS Matchmaster Competition Seat Die Set for .22 ARC (RCBS part no. 30240) is a two-die set built for reloading bottleneck cases in this modern precision cartridge. It consists of a full-length sizer die with an expander-decapping unit and a seater die with a bullet seater plug. The full-length sizer brings cases to SAAMI-minimum cartridge dimensions, sizing the outside, depriming, and expanding the neck to accept a bullet, with vents built in to prevent case damage from trapped air or excess lubricant. Headspace is held to minimum tolerances so case body length stays consistent through full-length sizing, and the seater die includes a built-in roll crimper to secure the bullet as it’s seated. This set is made in the USA and ships in RCBS’s signature green die box.

Key Specifications

• Chambered for .22 ARC, a modern short-action precision cartridge.
• Full-length sizer die brings cases to SAAMI-minimum cartridge dimensions for reliable chambering.
• Sizer die includes an expander-decapping unit, sizing, depriming, and expanding the neck in one step.
• Sizer die features vents to prevent case damage from trapped air or excess lubricant.
• Seater die has a built-in roll crimper, securing the bullet as it’s seated.
• Uses a standard 7/8"-14 thread, fitting most standard reloading presses.
• Made from proprietary die steel and manufactured in the USA.

Frequently Asked Questions

What does the full-length sizer die do? It sizes the case to SAAMI-minimum dimensions, deprimes it, and expands the neck to accept a bullet.

Does the seater die crimp the bullet? Yes, it has a built-in roll crimper that secures the bullet at the same time it’s seated.

What thread does this die set use? It uses a standard 7/8"-14 thread, compatible with most reloading presses.

Buy the RCBS Matchmaster Competition Seat Die Set, .22 ARC

Get precise, consistent .22 ARC brass prep with RCBS. Ships fast from our Lubbock, Texas gun shop, and browse our full reloading dies lineup.