Built to perform, the RCBS Matchmaster Competition Full-Length Bushing Die Set .300 Win Mag delivers a dependable, accurate setup. Key specs: .300 Win Mag.

To determine the proper neck bushing size measure the outside neck diameter of a loaded cartridge and subtract .002" to .003" to allow for a small amount of brass spring back.

Ships to your chosen FFL dealer — order online from Dawson Defense, an Arizona-owned licensed dealer.