L.E. Wilson Case Length Headspace Gauge, 222 Remington Cartridge_308 Marlin Express some with existing locking rings

some with existing locking rings

221 inches

225 Winchester

442 Sectional Density

173 Package Quantity 500/Box

L.E. Wilson Case Length Headspace Gauge, 222 Remington Cartridge_308 Marlin Express some with existing locking ringsInherent with reloading is the potential to oversize your bottleneck rifle brass. And the most important use of a cartridge case gauge is for setting up 78" 14 press type full length resizing dies. Headspace of fired rifle cases can quickly and accurately be measured using this tool with a caliper. This one piece gauge will check overall length to indicate a need for trimming and datum to head length to assure correct headspace to prevent over sizing.