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Originally Posted by Caleb
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Update: Dimpling Jig received. I used it this afternoon and successfully dimpled the barrel. It went reasonably well. I was able to feel the dimple as I was attaching the gas block and I could verify that the one set screw (I did only one dimple... the one closest to the back end of the block) did seat a little lower than the other set screw, as described in one of my YT videos. Everything else checks out in terms of the gas path. I can blow well on the barrel port and feel good pressure out of the muzzle side. Same with the gas tube to the block (and I visually note the tube is properly aligned to the block). The only other issue that might happen now is if the tube and the gas key (on the BCG) are misaligned. I don't think so, but that is a possibility. Much easier to fix, I think, though. Another thing could be the buffer and spring but, again, I don't think so as I believe I got the carbine buffer/spring set. I'll measure the spring so we'll see (10.5" it's supposed to be).
I will be taking my long range course this Saturday at JTAC. I had a little "prone practice" and think I got the proper eye relief to see the reticle in perfect shape. Now, I just have to work on the Parallax and then start zeroing in. After class, I will test the AR and see if my dimpling helped the situation. Hope so!
I'll provide an "after action" report after class.