![RCBS Matchmaster Bushing Die Set .338 Lapua Neck Size RCBS Matchmaster Bushing Die Set .338 Lapua Neck Size](https://cdn11.bigcommerce.com/s-3l7s57unr2/images/stencil/original/products/150619/263729/181046256__15210.1731679703.jpg?c=1)
Product Details
Sizing dies require the purchase of appropriate neck bushings for the caliber you are loading. 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.