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Recontouring a barrel

 
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  #8  
Old 09-05-2013, 09:57 PM
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Location: North Bend, Oregon
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Re: Recontouring a barrel

A few barrel makers contour and flute as the last step before they ship. They use heavy high speed cnc lathes and they still loose barrels to chatter and warping.

I lead slug every barrel as part of our quality control checks and have found every manufacturer cut or buttoned will frequently be loose under the flutes and on thin contours get looser towards the muzzle.

Anytime you cut metal it relieves stress so depending how much is cut it will change the bore size slightly. A couple tenths of a thousands won't hurt anything as the bullet bumps up under pressure and seals just fine.

If you can't do it yourself I doubt you will get anyone to do it. Kind of a rule that if a gunsmith wrecks something he buys it. Any chatter on a cut this big and you might never get it out. Better to pass than take this risk.
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  #9  
Old 09-05-2013, 10:01 PM
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Re: Recontouring a barrel

Quote:
Originally Posted by J E Custom View Post
Just clean living Joel. Ha Ha

J E CUSTOM
Ha ha!! That is exactly what I was thinking... What's that like anyway??

Jeff
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  #10  
Old 09-06-2013, 05:22 AM
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Re: Recontouring a barrel

Quote:
Originally Posted by J E Custom View Post
Just clean living Joel. Ha Ha

J E CUSTOM
Quote:
Originally Posted by Broz View Post
Ha ha!! That is exactly what I was thinking... What's that like anyway??

Jeff
Yep, clean living alright... At least that's what I keep telling myself.
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  #11  
Old 09-12-2013, 04:46 PM
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Join Date: Aug 2009
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Re: Recontouring a barrel

I re-contoured an ER Shaw barrel that I ordered short chambered and crowned.

IT turned out to be ridiculously accurate, but they are button rifled.
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