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Get precise measurements with the Sinclair Bump Gage Insert 🔧, designed for Standard Magnums up to 30 Cal. Perfect for accuracy!

SINCLAIR INTERNATIONAL SINCLAIR BUMP GAGE INSERT - SINCLAIR INTERNATIONAL #25 25° SHOULDER BUMP GAGE INSERT

050806111325 749011485

Variations:

SINCLAIR INTERNATIONAL #25 25° SHOULDER BUMP GAGE INSERT
18.9 GBP 25 £18.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser, 300 Winchester Magnum, 338 Winchester Magnum, 7 mm Remington Magnum, 225 Winchester, 8 mm Remington Mag, 7 mm STW, 30 Remington AR, 264 Winchester Magnum Product no.: 749011485
In stock
18.9 GBP 25 £18.90 *
SINCLAIR INTERNATIONAL #28 28° SHOULDER (UP TO 6.5MM) BUMP GAGE INSERT
18.9 GBP 14 £18.90 *
Cartridge: 22-250 Remington, 223 WSSM (Winchester Super Short Mag), 243 WSSM (Winchester Super Short Mag) Product no.: 749011472
In stock
18.9 GBP 14 £18.90 *
SINCLAIR INTERNATIONAL #23 23° SHOULDER BUMP GAGE INSERT
18.9 GBP 27 £18.90 *
Cartridge: 223 Remington, 5.56 mm NATO, 221 Remington Fireball, 222 Remington, 17 Remington, 222 Remington Mag Product no.: 749011473
In stock
18.9 GBP 27 £18.90 *
SINCLAIR INTERNATIONAL #26A 26° SHOULDER BUMP GAGE INSERT
18.9 GBP 16 £18.90 *
Cartridge: 6 mm Remington Product no.: 749011474
In stock
18.9 GBP 16 £18.90 *
SINCLAIR INTERNATIONAL #35 35° SHOULDER (UP TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 14 £18.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 7 mm WSM (Winchester Short Magnum), 325 WSM (Winchester Short Mag), 284 Winchester, 26 Nosler, 30 Nosler, 33 Nosler, 27 Nosler Product no.: 749011475
In stock
18.9 GBP 14 £18.90 *
SINCLAIR INTERNATIONAL #17 17° SHOULDER BUMP GAGE INSERT
18.9 GBP 7 £18.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 7.62 x 39 mm, 280 Remington Product no.: 749011476
In stock
18.9 GBP 7 £18.90 *
SINCLAIR INTERNATIONAL #20 20° SHOULDER (6MM-30 CALIBER) BUMP GAGE INSERT
18.9 GBP 53 £18.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 7 x 64 mm Brenneke, 260 Remington, 308 Marlin Express, 307 Winchester Product no.: 749011477
In stock
18.9 GBP 53 £18.90 *
SINCLAIR INTERNATIONAL #45A 45° SHOULDER (UP TO 30 CALIBER) BUMP GAGE INSERT
17.9 GBP 99 £17.90 *
Cartridge: 45-60 Winchester Product no.: 749011479
In stock
17.9 GBP 99 £17.90 *
SINCLAIR INTERNATIONAL #23A 23° (25 TO 270 CALIBER) BUMP GAGE INSERT
16.9 GBP 1 £16.90 *
Cartridge: 6.8 mm Remington SPC Product no.: 749011480
In stock
16.9 GBP 1 £16.90 *
SINCLAIR INTERNATIONAL #30A 30° SHOULDER (25 TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 60 £18.90 *
Cartridge: 6.5 Grendel, 300 Savage, 25 WSSM (Winchester Super Short Mag), 6.5 Creedmoor, 30 Thompson Center, 338 Ruger Compact Magnum, 300 Ruger Compact Magnum, 30 BR (Benchrest), 300 Remington SAUM, 6.5 mm BR Product no.: 749011481
In stock
18.9 GBP 60 £18.90 *
SINCLAIR INTERNATIONAL #40 40° SHOULDER (UP TO 6MM) BUMP GAGE INSERT
18.9 GBP 5 £18.90 *
Cartridge: 243 Winchester Ackley Improved, 220 Ackley Improved, 6mm Ackley Improved, 22-250 Ackley Improved, 22-6mm Remington Ackley Improved, 223 Ackley Improved, 6mm/30-30 Ackley Improved, 22/30-30 Ackley Improved, 228 Ackley Magnum Product no.: 749011482
In stock
18.9 GBP 5 £18.90 *
SINCLAIR INTERNATIONAL #40A 40° SHOULDER (25 TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 7 £18.90 *
Cartridge: 257 Ackley, 30-30 Ackley, 280 Ackley Improved, 257 Roberts Ackley Improved, 260 Ackley Improved, 257 Roberts +P Ackley Improved, 25-3000 Ackley Improved, 338-06 Ackley Improved, 25 Ackley Krag Short Improved Product no.: 749011483
In stock
18.9 GBP 7 £18.90 *
SINCLAIR INTERNATIONAL #30 30° SHOULDER (UP TO 6MM) BUMP GAGE INSERT
18.9 GBP 11 £18.90 *
Cartridge: 204 Ruger, 22 PPC, 6 PPC, 6 mm XC, 22 BR (Benchrest) Remington, 20 Tactical, 20 PPC, 20 BR (Benchrest), 20 Vartarg, 6 mm BRX, 6mm Creedmoor, 6 mm BR, 22 Nosler, 224 Valkyrie, 22 BRX, 20 Nosler Product no.: 749011484
In stock
18.9 GBP 11 £18.90 *
SINCLAIR INTERNATIONAL #21 21° SHOULDER BUMP GAGE INSERT
17.9 GBP 0 £17.90 *
Cartridge: 220 Swift Product no.: 749011471
Backorderable
17.9 GBP 0 £17.90 *
SINCLAIR INTERNATIONAL #20A 20° SHOULDER (ABOVE 30 CALIBER) BUMP GAGE INSERT
18.9 GBP 0 £18.90 *
Cartridge: 338 Federal, 338 Lapua Mag Product no.: 749011478
Backorderable
18.9 GBP 0 £18.90 *
16.9 18.9 15 GBP
18.9 GBP £18.90

Prices inclusive of duty & VAT.

Product no.: 749011485

Mfr. No.: 0910250

050806111325 Sinclair Bump Gage Insert, Standard Magnums up to 30 Cal,25\
In stock
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Variations:

SINCLAIR INTERNATIONAL #25 25° SHOULDER BUMP GAGE INSERT
18.9 GBP 25 £18.90 *
Cartridge: 6.5 x 55 mm Swedish Mauser, 300 Winchester Magnum, 338 Winchester Magnum, 7 mm Remington Magnum, 225 Winchester, 8 mm Remington Mag, 7 mm STW, 30 Remington AR, 264 Winchester Magnum Product no.: 749011485
In stock
18.9 GBP 25 £18.90 *
SINCLAIR INTERNATIONAL #28 28° SHOULDER (UP TO 6.5MM) BUMP GAGE INSERT
18.9 GBP 14 £18.90 *
Cartridge: 22-250 Remington, 223 WSSM (Winchester Super Short Mag), 243 WSSM (Winchester Super Short Mag) Product no.: 749011472
In stock
18.9 GBP 14 £18.90 *
SINCLAIR INTERNATIONAL #23 23° SHOULDER BUMP GAGE INSERT
18.9 GBP 27 £18.90 *
Cartridge: 223 Remington, 5.56 mm NATO, 221 Remington Fireball, 222 Remington, 17 Remington, 222 Remington Mag Product no.: 749011473
In stock
18.9 GBP 27 £18.90 *
SINCLAIR INTERNATIONAL #26A 26° SHOULDER BUMP GAGE INSERT
18.9 GBP 16 £18.90 *
Cartridge: 6 mm Remington Product no.: 749011474
In stock
18.9 GBP 16 £18.90 *
SINCLAIR INTERNATIONAL #35 35° SHOULDER (UP TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 14 £18.90 *
Cartridge: 300 WSM (Winchester Short Mag), 270 WSM (Winchester Short Mag), 7 mm WSM (Winchester Short Magnum), 325 WSM (Winchester Short Mag), 284 Winchester, 26 Nosler, 30 Nosler, 33 Nosler, 27 Nosler Product no.: 749011475
In stock
18.9 GBP 14 £18.90 *
SINCLAIR INTERNATIONAL #17 17° SHOULDER BUMP GAGE INSERT
18.9 GBP 7 £18.90 *
Cartridge: 30-06 Springfield, 270 Winchester, 25-06 Remington, 7.62 x 39 mm, 280 Remington Product no.: 749011476
In stock
18.9 GBP 7 £18.90 *
SINCLAIR INTERNATIONAL #20 20° SHOULDER (6MM-30 CALIBER) BUMP GAGE INSERT
18.9 GBP 53 £18.90 *
Cartridge: 308 Winchester, 243 Winchester, 7 mm - 08 Remington, 7 x 64 mm Brenneke, 260 Remington, 308 Marlin Express, 307 Winchester Product no.: 749011477
In stock
18.9 GBP 53 £18.90 *
SINCLAIR INTERNATIONAL #45A 45° SHOULDER (UP TO 30 CALIBER) BUMP GAGE INSERT
17.9 GBP 99 £17.90 *
Cartridge: 45-60 Winchester Product no.: 749011479
In stock
17.9 GBP 99 £17.90 *
SINCLAIR INTERNATIONAL #23A 23° (25 TO 270 CALIBER) BUMP GAGE INSERT
16.9 GBP 1 £16.90 *
Cartridge: 6.8 mm Remington SPC Product no.: 749011480
In stock
16.9 GBP 1 £16.90 *
SINCLAIR INTERNATIONAL #30A 30° SHOULDER (25 TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 60 £18.90 *
Cartridge: 6.5 Grendel, 300 Savage, 25 WSSM (Winchester Super Short Mag), 6.5 Creedmoor, 30 Thompson Center, 338 Ruger Compact Magnum, 300 Ruger Compact Magnum, 30 BR (Benchrest), 300 Remington SAUM, 6.5 mm BR Product no.: 749011481
In stock
18.9 GBP 60 £18.90 *
SINCLAIR INTERNATIONAL #40 40° SHOULDER (UP TO 6MM) BUMP GAGE INSERT
18.9 GBP 5 £18.90 *
Cartridge: 243 Winchester Ackley Improved, 220 Ackley Improved, 6mm Ackley Improved, 22-250 Ackley Improved, 22-6mm Remington Ackley Improved, 223 Ackley Improved, 6mm/30-30 Ackley Improved, 22/30-30 Ackley Improved, 228 Ackley Magnum Product no.: 749011482
In stock
18.9 GBP 5 £18.90 *
SINCLAIR INTERNATIONAL #40A 40° SHOULDER (25 TO 338 CALIBER) BUMP GAGE INSERT
18.9 GBP 7 £18.90 *
Cartridge: 257 Ackley, 30-30 Ackley, 280 Ackley Improved, 257 Roberts Ackley Improved, 260 Ackley Improved, 257 Roberts +P Ackley Improved, 25-3000 Ackley Improved, 338-06 Ackley Improved, 25 Ackley Krag Short Improved Product no.: 749011483
In stock
18.9 GBP 7 £18.90 *
SINCLAIR INTERNATIONAL #30 30° SHOULDER (UP TO 6MM) BUMP GAGE INSERT
18.9 GBP 11 £18.90 *
Cartridge: 204 Ruger, 22 PPC, 6 PPC, 6 mm XC, 22 BR (Benchrest) Remington, 20 Tactical, 20 PPC, 20 BR (Benchrest), 20 Vartarg, 6 mm BRX, 6mm Creedmoor, 6 mm BR, 22 Nosler, 224 Valkyrie, 22 BRX, 20 Nosler Product no.: 749011484
In stock
18.9 GBP 11 £18.90 *
SINCLAIR INTERNATIONAL #21 21° SHOULDER BUMP GAGE INSERT
17.9 GBP 0 £17.90 *
Cartridge: 220 Swift Product no.: 749011471
Backorderable
17.9 GBP 0 £17.90 *
SINCLAIR INTERNATIONAL #20A 20° SHOULDER (ABOVE 30 CALIBER) BUMP GAGE INSERT
18.9 GBP 0 £18.90 *
Cartridge: 338 Federal, 338 Lapua Mag Product no.: 749011478
Backorderable
18.9 GBP 0 £18.90 *

Description:

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.

Sinclair Bump Gage Insert, Standard Magnums up to 30 Cal,25\

Attributes

  • Cartridge: 300 Winchester Magnum,6.5 x 55 mm Swedish Mauser,225 Winchester,30 Remington AR,7 mm STW,264 Winchester Magnum,8 mm Remington Mag,7 mm Remington Magnum,338 Winchester Magnum
  • Delivery weight: 0.023kg
  • Shipping width: 83mm
  • Shipping length: 146mm
  • UPC: 050806111325

Item details

Made in USA

Customers reviews

Customer ratings (17)

3.1 / 5
Not recommended

Brownells USA Does not work for 6.5 Creedmoor 24/07/2018

Bought this 30A to check bumping the shoulders of my 6.5 Creedmoor brass. Had been using a Wilson Case gage to do the job and it works well I thought this may be faster. I bumped and bumped no reading beyond the initial cal of 1.501 on the digital calipers. Each bump i got a new reading on the Wilson Case Gage. Highly disappointed with the purchase.

Definitely recommended

Brownells USA Quality 20/06/2018

I have the original Stoney Point tool and this fits and works well on .338 Lapua Magnum cases to adjust the amount of shoulder bump on cases.

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