40 caliber bore size

krgriggs · Post by **krgriggs** » Sun Dec 20, 2015 7:34 pm

I did a chamber cast and pushed a bullet thru the barrel and the bore size came out .4045, was wondering if this is the bore size all 40 casliber Shiloh's are. Seems pretty tight to me. Might have to order a special mold for it. Chamber cast came out same as bullet.

Post by **Kirk** » Mon Dec 21, 2015 9:39 am

The bore and groove is .400" x .408", order a mold .399" x .408" and you will be perfect.
Remember there is a slight choke and when you push through the slug gets smaller, you always measure corner to corner also.
Just trying to save you money on ordering the wrong mold!!

Kirk,

humboldt · Post by **humboldt** » Mon Dec 21, 2015 2:06 pm

Kirk, How far down the barrel does your "small choke run"? Mori

krgriggs · Post by **krgriggs** » Mon Dec 21, 2015 8:13 pm

Great Kirk thanks for the info, I really appreciate the info!

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40 caliber bore size

40 caliber bore size

Re: 40 caliber bore size

Re: 40 caliber bore size

Re: 40 caliber bore size