Quote:
"I have examined your barreled action and found that the receiver is not in question , but the problem lies in the barrel. The threads on the barrel are extremely undersize, causing a misaligned thread joint. Upon measuring, the pitch diameter of the thread is .012” smaller than nominal size. This results in only about 40% thread engagement, which in this case is NOT safe for a barrel fit.
I actually mounted the receiver in my lathe chuck and centered it. With the nut loose, the barrel would tip a 1/4” in any direction at the muzzle. When the nut was tightened, it would stay in the same direction the barrel was pointing, no matter how it was oriented, right,left, up, or down.
While I had it in the lathe, I installed several spare barrels that I had laying around, to find that when the nut was tightened, the barrels centered and ran true to the muzzle.
I spent some time examining the threads on the barrel and it seems the thread form is not quite correct. There seems to be a flat at the root of the thread and none on the crest, just the opposite of what is found on a factory barrel. One thing is for sure, these were never checked with a thread pitch gauge. With a fit this loose, there is very minimal engagement on the threads. Under pressure there is a greater chance of shearing the threads and having a catastrophic failure.....something I would NOT chance.
I would send the barrel back for replacement."
I am glad to know it is not my receiver. But am upset that it is the barrel I waited forever to get (I think it was 6-8 months) and paid a pretty penny for.