Originally Posted by
eagle20
Yes i just checked with the cleaning rod procdure by putting a piece of tape on the cleaning rod then inserting the cleaning rod into the bore . initial measurement 17.0" to complete one full rotation checked measurement again 4 11/16 " or 4.687 "s so 17.0" - 4.687 "s = 12.32 = 1/12 twist rate.. there is not date code on the barrel , this was made long before Colt started stamping there barrels.. I some what recall asking about this barrel and i remember someone saying that it was on a Colt rilfe that was for export years ago , i cant remember the Colt model number ..
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