Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Summer Cleanout Sale!
Huge Savings On 2000+ Items From 200+ Brands - SHOP NOW

Daily Deal: Brownells Gun Scrubber Aerosole Cleaner $8.99 $6.99- Get Yours!

Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #28, 28 Degree, 22-250/223/243
Shoulder Bump Gage Insert, #23, 23 Degree, 223/22 Rem/17 Rem
Shoulder Bump Gage Insert, #26, 26 Degree, 6mm
Shoulder Bump Gage Insert, #35, 35 Degree, 30 Nosler/284/WSM
Shoulder Bump Gage Insert, #17, 17 Degree, 30-06 Springfield
Shoulder Bump Gage Insert, #20, 20 Degree, 308 Family
Shoulder Bump Gage Insert, #20A, 20 Degree, 338 Lapua
Shoulder Bump Gage Insert, #45A, 45 Degree, Wildcats
Shoulder Bump Gage Insert, #23A, 23 Degree, 25-270 Caliber
Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40A, 40 Degree, 25-338/Ackley
Shoulder Bump Gage Insert, #30, 30 Degree, 25R/W/338R/6.5CRD
Shoulder Bump Gage Insert, #25, 25 Degree, 225W-338W Mag
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
Shoulder Bump Gage Insert, #28, 28 Degree, 22-250/223/243
Shoulder Bump Gage Insert, #23, 23 Degree, 223/22 Rem/17 Rem
Shoulder Bump Gage Insert, #26, 26 Degree, 6mm
Shoulder Bump Gage Insert, #35, 35 Degree, 30 Nosler/284/WSM
Shoulder Bump Gage Insert, #17, 17 Degree, 30-06 Springfield
Shoulder Bump Gage Insert, #20, 20 Degree, 308 Family
Shoulder Bump Gage Insert, #20A, 20 Degree, 338 Lapua
Shoulder Bump Gage Insert, #45A, 45 Degree, Wildcats
Shoulder Bump Gage Insert, #23A, 23 Degree, 25-270 Caliber
Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40, 40 Degree, Ackley-6mm
Shoulder Bump Gage Insert, #40A, 40 Degree, 25-338/Ackley
Shoulder Bump Gage Insert, #30, 30 Degree, 25R/W/338R/6.5CRD
Shoulder Bump Gage Insert, #25, 25 Degree, 225W-338W Mag
None
MadeInUsa MadeInUsa OFF

SINCLAIR INTERNATIONAL - Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338

32 Reviews
Model Number
Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338
Brownells #
749011481
MFR #
7MM& 30 BR, REM ULT MAG BUMP G
UPC
050806111288
$10.99
Coupon Code
Purchase Limit Help

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

Specifications
Cartridge:
300 Remington SA Ultra Magnum
Model Number:
30A - 30° Shoulder (7mm-338 Caliber)
Restriction
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

What is the SINCLAIR INTERNATIONAL - Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338?

SINCLAIR BUMP GAGE INSERTS

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.

17 - 25-06 Remington, 270 Winchester, 280 Remington, 30-06 Springfield, 7.62 x 39 mm

20 - 243 Winchester, 260 Remington, 7 mm - 08 Remington, 7 x 64 mm Brenneke, 307 Winchester, 308 Marlin Express, 308 Winchester

20A - 338 Federal, 338 Lapua Mag

21 - 220 Swift

23 - 17 Remington, 221 Remington Fireball, 222 Remington, 222 Remington Mag, 223 Remington, 5.56 mm NATO

23A - 6.8 mm Remington SPC

25 - 264 Winchester Magnum, 225 Winchester, 6.5 x 55 mm Swedish Mauser, 7 mm Remington Magnum, 7 mm STW, 30 Remington AR, 300 Winchester Magnum, 8 mm Remington Mag, 338 Winchester Magnum

26 - 6 mm Remington

28 - 22-250 Remington, 223 WSSM (Winchester Super Short Mag), 243 WSSM (Winchester Super Short Mag)

30 - 20 Nosler, 6 mm BRX, 20 BR (Benchrest), 20 PPC, 20 Tactical, 20 Vartarg, 204 Ruger, 22 BR (Benchrest) Remington, 22 BRX, 22 PPC, 22 Nosler, 224 Valkyrie, 6 mm BR, 6 PPC, 6 mm XC, 6mm Creedmoor

30A - 300 Remington SAUM, 25 WSSM (Winchester Super Short Mag), 6.5 mm BR, 6.5 Grendel, 6.5 Creedmoor, 30 BR (Benchrest), 30 Thompson Center, 300 Ruger Compact Magnum, 300 Savage, 338 Ruger Compact Magnum

35 - 27 Nosler, 26 Nosler, 270 WSM (Winchester Short Mag), 284 Winchester, 7 mm WSM (Winchester Short Magnum), 30 Nosler, 300 WSM (Winchester Short Mag), 33 Nosler, 325 WSM (Winchester Short Mag)

40 - 22-250 Ackley Improved, 22-6mm Remington Ackley Improved, 22/30-30 Ackley Improved, 220 Ackley Improved, 223 Ackley Improved, 228 Ackley Magnum, 243 Winchester Ackley Improved, 6mm Ackley Improved, 6mm/30-30 Ackley Improved

40A - 25 Ackley Krag Short Improved, 25-3000 Ackley Improved, 257 Roberts +P Ackley Improved, 257 Roberts Ackley Improved, 338-06 Ackley Improved, 257 Ackley, 260 Ackley Improved, 280 Ackley Improved, 30-30 Ackley

45A – 45 Degree Shoulder up to 30 Caliber

See all of our AR15s and AR15 parts here.

Available options
Image Description
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift | UPC: 050806111189
Shoulder Bump Gage Insert, #21, 21 Degree, 220 Swift
UPC: 050806111189
Shoulder Bump Gage Insert, #28, 28 Degree, 22-250/223/243 | UPC: 050806111196
Shoulder Bump Gage Insert, #28, 28 Degree, 22-250/223/243
UPC: 050806111196
Shoulder Bump Gage Insert, #23, 23 Degree, 223/22 Rem/17 Rem | UPC: 050806111202
Shoulder Bump Gage Insert, #23, 23 Degree, 223/22 Rem/17 Rem
UPC: 050806111202
Shoulder Bump Gage Insert, #26, 26 Degree, 6mm | UPC: 050806111219
Shoulder Bump Gage Insert, #26, 26 Degree, 6mm
UPC: 050806111219
Shoulder Bump Gage Insert, #35, 35 Degree, 30 Nosler/284/WSM | UPC: 050806111226
Shoulder Bump Gage Insert, #35, 35 Degree, 30 Nosler/284/WSM
UPC: 050806111226
Shoulder Bump Gage Insert, #17, 17 Degree, 30-06 Springfield | UPC: 050806111233
Shoulder Bump Gage Insert, #17, 17 Degree, 30-06 Springfield
UPC: 050806111233
Shoulder Bump Gage Insert, #20, 20 Degree, 308 Family | UPC: 050806111240
Shoulder Bump Gage Insert, #20, 20 Degree, 308 Family
UPC: 050806111240
Shoulder Bump Gage Insert, #20A, 20 Degree, 338 Lapua | UPC: 050806111257
Shoulder Bump Gage Insert, #20A, 20 Degree, 338 Lapua
UPC: 050806111257
Shoulder Bump Gage Insert, #45A, 45 Degree, Wildcats | UPC: 050806111264
Shoulder Bump Gage Insert, #45A, 45 Degree, Wildcats
UPC: 050806111264
Shoulder Bump Gage Insert, #23A, 23 Degree, 25-270 Caliber | UPC: 050806111271
Shoulder Bump Gage Insert, #23A, 23 Degree, 25-270 Caliber
UPC: 050806111271
Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338 | UPC: 050806111288
Shoulder Bump Gage Insert, #30A, 30 Degree, 300 SAUM/7mm/338
UPC: 050806111288
Please select a FFL Dealer
or
7 dealers near
Distance:
10miles
arrow-down
Sort by:
Nearest first
arrow-down
pin wrong
No dealers found

Please search by another zipcode to find the nearest dealer.

Close
Brownells Retail Store
Phone Call
Pin in
Clock
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Switch view map
7 dealers near

Alternative products

Left Badge
Right Badge OFF  
5 Stars

200

300

Add on

Left Badge
Right Badge OFF  
5 Stars

200

300

SINCLAIR BUMP GAGE INSERT REVIEWS

3.4
32 Reviews
5 Stars
59%
4 Stars
0%
3 Stars
0%
2 Stars
3%
1 Stars
38%
Reviews Summary
The SINCLAIR BUMP GAGE INSERT is praised for its quality and durability, particularly its stainless steel construction that promises longevity and precision. However, some users encounter issues with inconsistent measurements and a lack of fit for certain calibers, impacting their overall satisfaction. Customer support is noted as responsive and helpful.
What Reviewers Are Saying
Product Quality
60%
Many reviewers highlight the excellent build quality of the SINCLAIR BUMP GAGE INSERT. Its stainless steel material is perceived as superior to aluminum alternatives, ensuring durability and offering consistent, accurate measurements over time. This theme is mentioned by 60% of reviewers.
Calibration and Measurement Accuracy
45%
Several reviews point out that while the gage works well for some calibers, users experience issues with inaccurate readings for others. The design does not consistently produce accurate measurements, causing frustration, particularly for those with specific needs. This concern is raised by 45% of reviewers.
Compatibility and Fit
35%
Compatibility with various calibers is a common theme, where users mention that some inserts do not fit certain cases well, leading to issues like poor measurement contact or complications during use. This inconsistency in fit is noted by 35% of reviewers.
Customer Support
25%
The responsiveness and assistance offered by customer support is frequently praised, with users reporting positive experiences when resolving issues related to order entry or product inquiries. This positive note comes up for 25% of reviewers.
Ease of Use
40%
Many reviews appreciate the ease of using the gage, particularly its compatibility with other tools like Hornady's equipment. The design's focus on matching shoulder angles is also highlighted as a beneficial feature for accurate measurement. This aspect is mentioned by 40% of reviewers.
5
Great product
I found the instrument very easy to use. All measurements were repeatable for each caliber I have used it on (4). I was shocked to find how much variation there was in different chambers, even from the same manufacturer. Nice be able to set up your die and know you’ve removed one element that can be detrimental to accuracy. Only take a couple minutes to get your die tuned in.
Would you recommend this? Yes, I would recommend to a friend
by Greg on March 29, 2025
Verified Purchase
Was this review helpful? 0
5
Areliable way to obtrain accurate consistent measurements
Areliable way to obtrain accurate consistent measurements
by ROBERT ROSENTHAL on December 12, 2024
Verified Purchase
Was this review helpful? 0
5
High quality
Very nicely machined and identified with engraving.
by JAMES FISHER on December 01, 2024
Verified Purchase
Was this review helpful? 0
5
Exactly what I needed
The aluminum comparator I was using was wearing out, changing the way the case was measured, the case was too long. Being stainless steel, this unit will not wear out and will give accurate measurements for many years to come. It fits into the body I already own, so that's a plus ! I'm using it now and it works great !!!!
Would you recommend this? Yes, I would recommend to a friend
by Anthony Fabiano on September 22, 2024
Verified Purchase
Was this review helpful? 1
5
Purchase
Great support. Had a problem with order entry, talked to customer support, and they fixed it on the spot. Really good people.
by CHARLES SPONAUGLE on September 06, 2023
Verified Purchase
Was this review helpful? 1
View All 32 Reviews
Customer Questions
115 Questions