Hardened stainless steel neck bushing designed for precise case neck sizing, available in .001” increments with a .003” taper for adjustable sizing.
Compatible exclusively with L.E. Wilson dies, and not interchangeable with Forster or RCBS dies.
To select the correct bushing size, subtract .002"-.003" from either the loaded cartridge's outside neck diameter or the calculated diameter using case neck wall thickness and bullet diameter.