Hornady Lock-N-Load Thickness Gauge 17-22 CAL RIM

<p>Sorting ammo by rim thickness will provide ammo with similar ignition qualities for improved accuracy.</p><p>This proven technique is used by competitive shooters and varmint hunters.</p><p>The rimfire gauge attaches to your caliper and includes bushings for use with most (not compatible with 17 WSM) .17 and .22 caliber rimfire ammo.</p>