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79 DEGREE MUZZLE CROWNING CUTTER Reviews & Ratings

79 DEGREE MUZZLE CROWNING CUTTER

Hardened steel, muzzle crowning tool cuts a slight (11° less than square) target chamfer on barrels. Gives good rifling protection without going too deep. 90° - 11° = 79°, hence the name. Eight, precision-machined flutes give smooth, chatter-free cuts to help eliminate extra lapping or stoning. ¼"-20 thread fits Brownells muzzle chamfering handles. Use with our muzzle pilots to ensure precise alignment with your bore. Available in ½" and ¾" diameters to accommodate most rifle/handgun barrel diameters.

SPECIFICATIONS:

Material: Tool Steel
Length: 2-3/8"
Diameter: 1/2" or 3/4"
Threads: 1/4"-20 tpi

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3 Stars

Reviews Summary

Customers are highly impressed with the 79 Degree Muzzle Crowning Cutter, praising its sharpness, ease of use, and the quality of the results it produces. Many reviewers report significant improvements in accuracy after using the tool. A few users encountered issues with chattering or the fit of the pilot, but these are minor setbacks compared to the overall satisfaction with the product's performance.

What Reviewers Are Saying

Ease of Use

61%

Numerous reviewers find the cutter easy to use for crowning barrels, with many noting that it simplifies a typically challenging process. Users appreciate the straightforward mechanics of the tool, allowing both novices and experienced gunsmiths to achieve great results.

Product Quality

56%

Reviewers consistently highlight the high quality of the crowning cutter, stating that it is well-made, durable, and capable of producing clean, precise crowns. Users feel confident in the tool's longevity and reliability, making it a valuable addition to their gunsmithing equipment.

Accuracy Improvement

50%

Many users experienced significant enhancements in their rifles' accuracy after recrowning with this tool. Feedback often emphasizes how a well-executed crown can vastly improve shooting performance, with several noting notable reductions in group size.

Cutting Performance

33%

While many reviews praise the cutting ability of the tool, a subset highlights struggles with chattering or the need for patience during use. Most find that using adequate cutting oil and not applying excessive pressure yields excellent results, while others wished for smoother cutting action.

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Good for .30, not for .17

This took my .30 to a healthy place but when I bought a .17 pilot for it I could tell it bottomed out closer to .22. I had to order the .17 cal specific size. It could say more in the description about pilot/caliber limitations.

Would you recommend this? Yes, I would recommend to a friend

by Travis on October 31, 2026

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79 Degree 1/2" Cutter

Cutter worked as expected. The cutting edges were nice and sharp. Would recommend.

by MICHAEL F. on October 12, 2026

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Works well.

This cutter works pretty well. It takes a little practice getting the feel for using the correct amount of pressure so as not to leave chatter marks. Use lots of cutting fluid, such as Do Drill. It might work even better if the cutting surfaces were staggered.

A solid tool

This is a solid built tool that does a nice job on my Mauser barrel. I was disapointed that it did not come with any directions about barrel crowning. Had to go online to find out how to use it correctly.

Good quality product.

The cutter has the look of qood quality. It cuts real smooth and stays sharp for a long time.