Hardened stainless steel neck bushing designed for precise control of neck tension in .001” increments, with a .003” taper for adjustable sizing.
Unique feature allows for emergency sizing adjustment by flipping the bushing to provide tighter sizing when brass hardens or for fine-tuning.
Compatible exclusively with L.E. Wilson dies and not interchangeable with Forster or RCBS dies, with selection based on specific measurements of cartridge or case neck.