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Barrel crown question

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15 November 2008, 23:12
mstarling
Barrel crown question
OK Guys,

I have a previously used Douglas barrel chambered in .376 Steyr. Previous owner had it made 24" with a step at the muzzle to fit a Ruger front sight barrel band. I don't want to use one, so I want to cut the barrel back and recrown it.

I have a 13x40 Jet lathe with a Bison 6 jaw set true chuck and an H&K barrel alignment tool. How accurately should the center of the uncut barrel bore be located? (Had little trouble getting it to +-0.001" spin eccentricity but is being a PITA beyond that.)

Thanks!


Mike

--------------
DRSS, Womper's Club, NRA Life Member/Charter Member NRA Golden Eagles ...
Knifemaker, http://www.mstarling.com
15 November 2008, 23:23
rem721
Total runnout shuld be less than .0005".
16 November 2008, 00:25
butchlambert
Mike,
Even as anal as I am about that, I don't think you could tell it if it were within .0001. Just make sure your cut is 90deg. to the bore.
Butch
16 November 2008, 00:33
mstarling
Thanks Guys!

Got it down to the point that the needle on the dial indicator just shudders a little.

Anything wrong with an 11 degree crown?


Mike

--------------
DRSS, Womper's Club, NRA Life Member/Charter Member NRA Golden Eagles ...
Knifemaker, http://www.mstarling.com
16 November 2008, 00:41
vapodog
quote:
Anything wrong with an 11 degree crown?

Winchester never thought there was anything wrong with that!


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16 November 2008, 00:48
butchlambert
I haven't seen anybody prove that the shape of the crown makes a difference in the way they shoot. Just need some protection from dinging it.
Butch