L.E. Wilson Adjustable Wilson Case Length Headspace Gauge, 375 H&H Magnum
LE Wilson Case Length Headspace Gauges help to resolve the inherent problem of potentially over sizing your bottleneck rifle brass. And the most important use of a cartridge case gauge is for setting up 7⁄8"-14 press type full length resizing dies. Headspace of fired rifle cases can quickly and accurately be measured using this tool with a caliper.
For Belted Magnums. While the belt provides support for proper headspace, the life of the case will drastically shorten unless resizing is held to a minimum at the shoulder.
Suitable for: 375 Holland & Holland Magnum