Handgun Calibers - Case & Ammunition Gauge

Our innovative patent pending 3 step face design will measure the minimum case length (lower step), maximum case length (middle step), and also show you the SAAMI specs for the maximum allowed chamber headspace (the difference between middle and upper step which is the face of the gauge). See pictures for more information.The Shooters Box case and ammunition gauges are manufactured right here in Malden Massachusetts, by American workers on American machines! Made from Stainless Steel and built to last a lifetime. Each gauge is manufactured to S.A.A.M.I. (Sporting Arms and Ammunition Manufacturers Institute) chamber/headspace specifications. The gauge will measure the maximum cartridge length (full overall length), the minimum and maximum case length, the maximum case diameter, and the minimum and maximum headspace. A loaded cartridge should fit freely and easily into the gauge. A cartridge that does fit properly may not correspond to the proper chamber dimensions.Place a clean cartrid