308 Family, 20° Shoulder Bump Gage Insert : SINCLAIR INTERNATIONAL SINCLAIR BUMP GAGE INSERT | Sinclair Intl

Sinclair Bump Gage Inserts are used to measure the amount of shoulder bump when setting up full length sizing dies. Our Bump Gages install in either of our comparator bodies and are machined to fit particular shoulder angles of cartridges. Rather than measuring to the datum line, these gages indicate off of the shoulder of the case to get a better, more easily assessable measurement of how much you are actually sizing your cases. We usually recommend between .001" to .002" bump for bolt action rifles and between .003" and .005" for AR-15 type rifles. Also a useful tool for keeping your brass and loaded ammunition separated if you have multiple rifles chambered for the same cartridge and checking loaded ammunition.


Big Book Catalog, Issue:68, Page:531
Big Book Catalog, Issue:68, Page:532
Sinclair, Issue:5B, Page:027
Sinclair, Issue:5B, Page:034
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Cartridge: 308 Family, 243 Winchester, 260 Remington, 6.5/308 Winchester, 7 mm - 08 Remington, 308 Winchester, ...

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Cartridge: 25-06 Remington, 270 Winchester, 30-06 Family, 30-06 Springfield

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Cartridge: 338 Lapua Mag

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Cartridge: 220 Swift

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Cartridge: 17 Remington Fireball, 221 Remington Fireball, 222 Remington, 222 Remington Mag, 223 Family, 223 Remington, ...

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Cartridge: 6.8 mm Remington SPC

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Cartridge: 6 mm Remington, 6 mm/244 Remington

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Cartridge: 25/300 WSM (Winchester Short Mag), 6.5/300 WSM (Wincester Short Mag), 270 WSM (Winchester Short Mag), 7 mm WSM (Winchester Short Magnum), 300 WSM (Winchester Short Mag), 325 WSM (Winchester Short Mag), ...

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Cartridge: 22-250 Remington, WSSM Family

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Cartridge: 17 PPC, 17 Remington Fireball, 20 BR (Benchrest), 20 PPC, 22 BR (Benchrest) Remington, 22 PPC, ...

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Cartridge: 7 mm BR (Benchrest) Remington, 30 BR (Benchrest) Remington

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Caliber: Universal