Designed for shooters who are seeking the ultimate performance from their handloads, the Instant Indicator quickly checks the headspace from the case shoulder to the base. This information is critical for setting up your sizing die to achieve the precise amount of shoulder bump. To compare bullet seating depths simply insert a standard Redding sizing bushing of the proper    diameter for the caliber you are using. The Instant Indicator can also be used to quickly compare overall case lengths and bullet base to ogive. Now available for cartridges .222 Remington through .338 Winchester Magnum.