Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

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 AR15 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:5A, Page:027
Sinclair, Issue:5A, Page:034

Filtered Matches

STANDARD MAG SINCLAIR BUMP GAGE INSERT
749-011-485WB
Sinclair Bump Gage Insert, Standard Magnums up to 30 Cal,25°
749011485Sinclair Bump Gage Insert, Standard Magnums up to 30 Cal,25°

Mfr Part: 0910250

$9.99

In Stock

Cartridge: Belted Magnums

Other Matches

30-06 FAMILY SINCLAIR BUMP GAGE INSERT
749-011-476WB
Sinclair Bump Gage Insert, 30-06 Family up to 8mm, 17°
749011476Sinclair Bump Gage Insert, 30-06 Family up to 8mm, 17°

Mfr Part: 0910170

$9.99

In Stock

Cartridge: 30-06 Springfield

308 FAMILY SINCLAIR BUMP GAGE INSERT
749-011-477WB
Sinclair Bump Gage Insert, 308 Family, 20°
749011477Sinclair Bump Gage Insert, 308 Family, 20°

Mfr Part: 0910200

$9.99

In Stock

Cartridge: 308 Winchester

338 LAPUA SINCLAIR BUMB GAGE INSERT
749-011-478WB
Sinclair Bump Gage Insert, 338 Lapua, 20°
749011478Sinclair Bump Gage Insert, 338 Lapua, 20°

Mfr Part: 0910201

$9.99

In Stock

Cartridge: 338 Lapua

BUMP GAGE INSERT/220 SWIFT
749-011-471WB
Sinclair Bump Gage Insert, 220 Swift, 21°
749011471Sinclair Bump Gage Insert, 220 Swift, 21°

Mfr Part: 0910210

$9.99

In Stock

Cartridge: 220 Swift

223 FAMILY SINCLAIR BUMP GAGE INSERT
749-011-473WB
Sinclair Bump Gage Insert, 223 Family up to 6mm, 23°
749011473Sinclair Bump Gage Insert, 223 Family up to 6mm, 23°

Mfr Part: 0910230

$9.99

In Stock

Cartridge: 223 Remington

6.8 SPC SINCLAIR BUMP GAGE INSERT
749-011-480WB
Sinclair Bump Gage Insert, 6.8mm Rem SPC, 23°
749011480Sinclair Bump Gage Insert, 6.8mm Rem SPC, 23°

Mfr Part: 0910231

$9.99

In Stock

Cartridge: 6.8 mm Remington SPC

SINCLAIR BUMP GAGE INSERT/6MM REM
749-011-474WB
Sinclair Bump Gage Insert, 6mm Rem/244, 26°
749011474Sinclair Bump Gage Insert, 6mm Rem/244, 26°

Mfr Part: 0910260

$9.99

In Stock

Cartridge: 6 mm Remington

284 &WSM FAMILY BUMP GAGE INSERT
749-011-475WB
Sinclair Bump Gage Insert, 284 Family, WSM Fam up to 338 Cal
749011475Sinclair Bump Gage Insert, 284 Family, WSM Fam up to 338 Cal

Mfr Part: 0910350

$9.99

In Stock

Cartridge: 284 Winchester

22-250, 223/243 WSSM BUMP GAGE INSERT
749-011-472WB
Sinclair Bump Gage Insert, 22-250, WSSMs, 28°
749011472Sinclair Bump Gage Insert, 22-250, WSSMs, 28°

Mfr Part: 0910280

$9.99

In Stock

Cartridge: 22-250 Remington

17 FB.22/6MM PPC&BR, 204 RUGER INSERT
749-011-484WB
Sinclair Bump Gage Insert, PPC/BR's, 17 Fireball, 30°
749011484Sinclair Bump Gage Insert, PPC/BR's, 17 Fireball, 30°

Mfr Part: 0910300

$9.99

In Stock

Cartridge: 17 Mach IV, 17 Remington Fireball, 204 Ruger, 22/6 mm Remington

7MM& 30 BR, REM ULT MAG BUMP GAGE INSE
749-011-481WB
Sinclair Bump Gage Insert, 7/30 BR, UM to 338, 30°
749011481Sinclair Bump Gage Insert, 7/30 BR, UM to 338, 30°

Mfr Part: 0910301

$9.99

In Stock

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

ACK IMPROVED TO 6MM BUMP GAGE INSERT
749-011-482WB
Sinclair Bump Gage Insert, Ackley Improved to 6mm, 40°
749011482Sinclair Bump Gage Insert, Ackley Improved to 6mm, 40°

Mfr Part: 0910400

$9.99

In Stock
ACK IMPROVED TO 338 BUMP GAGE INSERT
749-011-483WB
Sinclair Bump Gage Insert, Ackley Improved to 338, 40°
749011483Sinclair Bump Gage Insert, Ackley Improved to 338, 40°

Mfr Part: 0910401

$9.99

In Stock
BUMP GAGE INSERT/WILDCAT
749-011-479WB
Sinclair Bump Gage Insert, 45 Degree Shoulder, 45°
749011479Sinclair Bump Gage Insert, 45 Degree Shoulder, 45°

Mfr Part: 0910450

$9.99

In Stock

Cartridge: 45-60 Winchester

SINCLAIR COMPARATOR/BUMP GAGE BODY
749-002-552WB
Sinclair Comparator/Bump Gage Body
749002552Sinclair Comparator/Bump Gage Body

Mfr Part: 091000

$15.99

In Stock

Caliber: Universal

XL COMPARATOR/BUMP GAGE BODY
749-011-959WB
XL Comparator/Bump Gage Body
749011959XL Comparator/Bump Gage Body

$15.99

Out of Stock
SINCLAIR BUMP GAGE INSERT