38cal Barrel

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SSShooter
Posts: 2910
Joined: Mon Feb 20, 2012 7:06 am
Location: Jersey Shore

38cal Barrel

Post by SSShooter »

My new 38cal barrel has a 0.366" x 0.375" bore & groove measurement. I'm going to start with greasers and am wondering if I should start with a 0.375" or a 0.376" mold? Which do you suggest and why?
Glenn
beltfed
Posts: 1962
Joined: Sun Jun 03, 2007 10:07 am
Location: Central Wi

Re: 38cal Barrel

Post by beltfed »

Glenn,
YOu really need to check on the barrel Chamber dimensions after fitting and chambering.
The fit for the bullet, gg or DDEPP is best set for any freebore and Leade dimensions which could be larger than the groove diameter.
Otherwise, it is wise to go about 0.001-0.002 larger than groove diameter to ensure of no blowby and gas cutting
as the bullet leaves the case and enters the grooves/bore
beltfed/arnie
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