I have about 700 rounds through my Sig Nitron Rail 1911. Since the first shot, this gun has shot about 2 to 3 inches left at 10 yards. I have had much better shooters try the gun, and their results are also to the left. Since I own and shoot six 1911 pistols, I am comfortable stating that it is the gun and not me. Now, as to what is causing it. At first, I figured the sights were off, but they appear to be centered correctly. After my last field strip of the pistol, I noticed an unusual wear pattern on the inside of the barrel bushing. There is a very distinct area where the finish is worn down to bare metal. If you are behind the gun looking down the slide, the wear mark is at the 4 o'clock position on the barrel bushing. Could this rubbing of the barrel against the bushing be what is causing the POI to be 3" to the left at 9 o'clock? Of my six 1911s, four have barrel bushings. None of the others display any wear patterns like this.
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