RCBS Precision Mic 6.5 Creedmoor

These micrometer cartridge headspace tools will enable you to set up full-length sizing dies for the precise amount of shoulder bump you wish. Precision Mic gages are initially calibrated on a once-fired case, and the micrometer will read shoulder set back variation from the initial set-up. Each Precision Mic kit also includes a bullet seating depth tool for the initial seater die set-up.