Lee 92397 Micrometer Full-Length 2-Die Set 7x57mm Mauser

The Lee 92397 Micrometer Full-Length 2-Die Set is a complete reloading solution for the classic 7x57mm Mauser (.275 Rigby) cartridge, one of the most respected European sporting rifle rounds still in use today. Built by Lee, this set pairs a full-length sizing die with a micrometer-adjusted bullet seater, giving handloaders the two essential tools needed to bring fired 7x57 Mauser brass back to standard dimensions and assemble accurate, consistent reloads for rifle chambers.

The full-length sizing die resizes the case body and neck back to factory dimensions so brass will chamber reliably after firing, while the micrometer bullet seater uses Lee's indexed adjustment collar to dial in seating depth in precise increments without the need for separate seating stems or trial-and-error shimming. This makes it easy to switch between different bullet profiles and weights while keeping depth consistent across all of your handloads.

The set ships complete and ready to use: the full-length sizer, the micrometer bullet seater, a universal shell holder, printed instructions with load data, a powder dipper, and a storage box to keep the dies and small components organized between reloading sessions.