RCBS Gold Medal Match Series Bushing Neck Sizer Die 338 Lapua Magnum

The RCBS Neck Bushing Sizer Die, .338 Lapua Magnum use precision-machined neck bushings (sold separately) to size the case neck just enough provide the exact amount of bullet tension without overworking the brass. 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. Shellholder sold separately.