WILSON ADJUSTABLE CASE GAGE

For belted mags. While the belt provides support for proper head-space, the life of the case will drastically shorten unless resizing is held to a minimum at the shoulder. These gages, which can be adjusted to be used with individual rifles of the same caliber, will enable the hand-loader to control the amount of resizing simply by measuring a fired case. Overall length can also be checked with these gages. 

This is the adjustable model for NON-standard (or magnum) calibers.

After sizing your cases, there is a good chance the brass will lengthen. The gage will also check min/max case length and will point out the need for case trimming. This is an essential tool for every reloader. 

Note: Does not measure body diameters. This gage is intended to be used with fired cases to determine a basis for full length sizing and trimming.