The Sinclair Chamber Length Gauges Are Designed So The handloader Can Determine The True Length Of His rifle's Chamber When Measuring From The Bolt Face To The End Of The chamber's Neck. This Measurement Will Tell You How Much Excess Case Length Your Chamber May Have Over Published Trim Lengths In Reloading handbooks.
The Sinclair Gauges Are inserted Into a Fired, Unprimed shortened Case And then chambered Into Your Rifle. The Insert pushes Back Into The Case When It Contacts The End Of Your Chamber. You then Extract The Case And Measure The Overall Length. The Gauge Is Made Of 12L14 Soft Steel So It Will Not Damage Your Chamber. Step-By-Step instructions Accompany Each Gauge. The Gauges Can Be Used Over And Over Again.
Cartridge: 404 Jeffery
Manufacturer: Sinclair Manufacturer Number: G422
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