Weatherby Select Plus 338 WBY RPM Rifle Brass - 20/Box

The Weatherby Select Plus line offers premium unprimed rifle brass for handloaders working with the 338 WBY RPM cartridge. Each box contains 20 brass cases featuring CNC-machined primer pockets for consistent, reliable ignition after resizing and priming.

The 338 WBY RPM is Weatherby's modern magnum cartridge, built around a .338-inch bullet diameter with a max case length of 2.57". Introduced in 2022, the 338 WBY RPM was designed for rifles with short 18" barrels, pairing magnum performance with a compact, efficient case. This Select Plus brass ships as a 20-round box of unprimed cases ready for the reloading bench.