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Posted: 9/4/2010 9:52:24 AM EDT
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When you cut (shorten) a rifle barrel & crown the muzzle again, is there a set angle, or is the angle cut according to the cal.? If it`s the same angle for all cal, can you tell me what it is?
Thanks in advance. |
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There's no set angle, it's whatever the factory or the gunsmith wants to use.
Brownell's sell crowning cutters, both to give the muzzle whatever profile you want, and to do the actual crowning. As you'll notice, there are unlimited muzzle profiles from rounded, to flat, to flat with a counter sunk area to protect the crowned area, to Remington's concave shape. All that's needed with the actual crown is to lightly break the sharp edge of the muzzle where the rifling meets the end of the barrel. Old timers used a round head brass screw in a drill with valve grinding compound to make a crown. Today, you can use the Brownell's hand tools, or a lathe for a perfect crown. What's most important is to get the end of the barrel at a perfect 90 degrees to the bore. I've seen rifles that weren't crowned at all that shot great. It's the 90 degrees to the bore that counts the most. |
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11 degree, round, and 90 degree crowns are the most popular. 90 degree crowns should be recessed for some protection.
The crown at the bore needs to be perpendicular to the bore centerline at the muzzle. A precision ground mandrel is used with the hand crowning tools, dial indicators are used to dial in the barrel in a lathe. |
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