Hornady Lock-N-Load 17-22 Rim Thickness Gauge brand_-Lee the Challenger GS sits directly

the Challenger GS sits directly behind the scope

normal fit

As with any reloading component

or where wall space is at a premium

Hornady Lock-N-Load 17-22 Rim Thickness Gauge brand_-Lee the Challenger GS sits directlySerious rimfire shooters know that brass varies from round to round, and rim thickness is one of the variables that affects how consistently a cartridge ignites. The Hornady Lock N Load 17 22 Rim Thickness Gauge lets you sort ammunition by rim thickness so each batch shares similar ignition characteristics, which tightens groups on the target and the quarry. It clamps onto your own caliper and uses supplied bushings to measure most . 17 and . 22