45 Degree Sinclair Bump Gage

45 Degree Sinclair Bump Gage
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  • Item #: 749 011 479
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Price $9.95

45 Degree Sinclair Shoulder Bump Gage for measuring  the amount of shoulder bump when setting up full length sizing dies.  Bump Gage can be used on the granite bed of our Ultimate Cartridge Check System or with a caliper and one of the Sinclair Bump Gage Bodyies.  Gage machined to fit particular shoulder angle of cartridges. Rather than measuring to the datum line, it indicates off of the shoulder of the case to get a more precise measurement of how much you are actually sizing your cases.  We recommend .001" to .002" bump for bolt action rifles and between .003" and .005" for AR-15 type rifles.