#3096012 - 12/26/12 10:52 AM
Question about short shortening magnum barrel??
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DMAG
4 Point
Registered: 11/13/10
Posts: 138
Loc: Bradley County, TN
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I have an old 7mm Magnum ADL that has been through the ringer and it needs a crown job. I know it will affect velocity, but will it affect accuracy if i shorten the barrel. I have read several conflicting reports online, but just wanted to see what you guys thought. One last thing, have any of you guys ever done your own crown job with success? Thanks for your help.
Edited by DMAG (12/26/12 10:53 AM)
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#3096029 - 12/26/12 11:10 AM
Re: Question about short shortening magnum barrel??
[Re: DMAG]
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TiminTN
12 Point
Registered: 06/18/00
Posts: 6265
Loc: Memphis,Tennessee U.S.A.
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I use a bronze mandrel I bought from Brownells turned slowly w/out pressure with lapping compound. It works well.
_________________________
You cannot argue with STUPID
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#3096044 - 12/26/12 11:25 AM
Re: Question about short shortening magnum barrel??
[Re: TiminTN]
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Deer Assassin
Non-Typical
Registered: 08/01/03
Posts: 80759
Loc: Kingston Springs
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if you just took a little off less than an inch it should affect the vel that much 20-30 fps i would guess
_________________________
Drag Racing
Spending money I dont have
on things I dont need
to impress people I dont know
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#3096139 - 12/26/12 12:51 PM
Re: Question about short shortening magnum barrel??
[Re: Deer Assassin]
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bjohnson
4 Point
Registered: 11/23/10
Posts: 399
Loc: Fort Hood, TX
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It will not affect accuracy, IF done by a good smith.
_________________________
It is better to live one day as a lion, than a thousand years as a lamb.
Give me by all means the shorter and nobler life, instead of the one that is longer but of less account.
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#3096939 - 12/26/12 10:21 PM
Re: Question about short shortening magnum barrel??
[Re: bjohnson]
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DMAG
4 Point
Registered: 11/13/10
Posts: 138
Loc: Bradley County, TN
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Could somebody recommend me a good gunsmith in the chattanooga area
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#3097136 - 12/27/12 07:10 AM
Re: Question about short shortening magnum barrel??
[Re: DMAG]
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DaveB
8 Point
Registered: 09/03/08
Posts: 1862
Loc: Shelby County
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When you re-do a crown you might take off 1/4 inch, depending upon current rounded or flat muzzle. If the rifling is damaged at the muzzle, then you take off just enough to stay legal and clean up the damage.
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#3097783 - 12/27/12 03:44 PM
Re: Question about short shortening magnum barrel??
[Re: DaveB]
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bjohnson
4 Point
Registered: 11/23/10
Posts: 399
Loc: Fort Hood, TX
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There's a guy in Taft. Pitts Precision Rifles.
_________________________
It is better to live one day as a lion, than a thousand years as a lamb.
Give me by all means the shorter and nobler life, instead of the one that is longer but of less account.
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