[Quizcat]

I did thread the end of the barrel with the 14 x 1 LH die. The depth of the tube cutter groove is completely obliterated by the new threads. I used a guide arbor on the die to make sure that the threads were installed perpendicular to the bore of the barrel. The die's arbor guide didn't bind whatsoever in the bore as I was installing the threads.

The cutter groove itself only extended .500" back from the end of the bore, and the arbor extended at least 1.5" into the bore, at least an inch beyond where the cutter groove on the OD of the barrel was located. Of course, cutting into the OD of the barrel was not something I planned on doing. I don't like it, I don't recommend it, etc...but it happened.

I guess I can mic the bore. It doesn't seem like there would be a bore constriction from "cutting" .008" into the OD of the barrel with the tube cutter, just based on the arbor turning so freely in the bore.

I realize that testing for bore diameter changes isn't going to conclusively establish whether there was a constriction established just based on the die arbor guide turning freely. So, just to be safe, I'll mic the bore, and report back whether cutting .008" into the OD of the barrel caused any constriction in the bore.

I'm more concerned about whether safety was compromised with respect to the groove in this case, versus issues of accuracy being perfect. We're talking about an AK47 here, Russian made, and I'm not expecting to get one or even two MOA from it. That doesn't mean I want it to be inaccurate, no, but just sayin'...