25453 Barrel Crowning Tool
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11° crown cutting tool for rifle barrels.
This tool is used to cut an 11 degree target crown in your muzzle. This relief cut is primarily to protect the actual crown which is the exact point where the bullet leaves the muzzle. For ideal accuracy, the muzzle exit hole should be perfectly concentric and perpendicular to the barrel ID. If there is a slight chamfer at that point, it must be perfectly concentric and perpendicular.
To protect this important edge, most guns are either counter-bored or recessed at a slight angle. Traditionally, that is an 11° angle per side, cut deep enough to cover most of the barrel face.
This tool is designed to cut that shape and minimize chatter.
It has a 1/4-20 threaded shank to work in a handle for hand cutting, or in a drill adapter for use on a drill press or hand drill.
A pilot should always be used and will soon be available on this site in a wide variety of calibers.
Cutting fluid should also be used and is available on this site now.
Mfg by Brownells®
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