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38cal Barrel
Posted: Tue Oct 25, 2022 9:22 pm
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?
Re: 38cal Barrel
Posted: Wed Oct 26, 2022 4:09 pm
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