Had my G43 to the outdoor range twice prior to today and thought it was shooting about 6" low at 8" plates 39 feet out with 115 grain target ammo. Today I went back to the range to reanalyze the problem. Took my Glock 34, 35, and 26 to compare. In a nutshell, the G43 is fine, it was me. 34, 35, and 26 hit just fine today. During my G43 test with multiple misses, I got to the end of the first box and only had 1 round left. So I fired that 1 round and the slide did not lock back. So then I started testing with just 1 round in the mag and was having repeated slide lock back failures. So I started tightening my grip and got to the point where the slide would always lock back with a single round in the magazine as it should. Really wasn't aiming during this part of the test, watching the slide more than anything. Took my now improved, tighter, thumbs forward, grip and am hitting the plates in the center., I think the 43 may be harder to grip than other double stack Glocks.