RCBS MatchMaster Trimmer Collet #2 .418/.506 Dia. | MPN 9566

Description

If your reloading bench runs on an RCBS MatchMaster Precision Case Trimmer, this #2 collet is what opens the door to bigger-bodied brass. It grips case heads in the .418 to .506 diameter range, holding each piece secure and centered so the cutter meets the mouth square every time. That secure hold is the whole game with a precision trimmer, and it's what lets you dial in consistent length from the first case to the last.

Where the MatchMaster #2 Collet Earns Its Keep

The collet that ships with the trimmer (the #1) covers the popular .223 Rem, .308 Win, 6.5 Creedmoor and 300 Win Mag families. Once you step up to larger case heads, you need the matching collet, and the #2 fills that gap. Like the rest of the system, each collet is built around stepped internal diameters, so a single collet actually covers multiple common rim sizes. Measure your brass at the rim and head area, then pick the step that seats snug and square.

Fitment Notes for the MatchMaster Collet #2

These are the newly designed MatchMaster collets, not the older Trim Pro style, so they won't swap in with legacy RCBS parts. One handy detail: the collets themselves are cross-compatible between the RCBS MatchMaster and Henderson Precision trimmers, even though the pilots are not. If you're running the MatchMaster's micrometer setup and 3-way carbide cutter, adding the right collet is the key to keeping that repeatable-to-.001 consistency across your whole caliber lineup.

Machined in the USA to the same standards as the rest of the MatchMaster line, this is a straightforward, do-one-job-well accessory. Grab it when your brass outgrows the #1, and you'll keep every case seated exactly where it needs to be for a clean, uniform trim.