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Old March 10, 2019, 04:57 AM   #27
tangolima
Senior Member
 
Join Date: September 28, 2013
Posts: 3,829
Quote:
Originally Posted by RC20 View Post
A 303 is actually .310 - .312 bullet diameter. It will swallow the 308 bullet.
I beg to differ.

30 cal, as in 30-06, has bore (land) diameter of 0.300", and bullet (groove) diameter of 0.308". 303 British has bore diameter of 0.303" and bullet diameter of 0.311". A 303 bore will most certainly not swallow a 308 bullet.

A bullet on muzzle is just a quick, hand waving, kind of test. Better one is a chamber cast. A smith should be able to do that for a small fee. It would be money well spent in this case. It will definitely identify the caliber of the rifle, and the condition of the throat and rifling.

-TL

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