Sorry for the confusion this thread may have caused. I was realy just wondering if anyone else that had a KKM barrel noticed any kind of wear marks on the barrel. This is the first 1 I have owned and the groups are tight but I had difficulty getting the gun to cycle with store bought 9mm ammo (wanted 9mm for static steel). The comp does bleed of pressure (suppose to, thats why it's there) but I understood that other people use factory ammo and the gun cycles. I put an 11 pound spring in the gun and it helped but sometimes the gun would not go all the way into battery. A friend of mine said "polish the inside of the slide, it may be rubbing slightly on the barrel hood" when I took the gun apart I noticed the side of the barrel had rub marks on one side only. I took it to my friend and he looked at the barrel foot and noticed the 1/2 wear mark also. The real confusing part was the foot mark and the rub mark are on the same side, it they were on opposite sides I would say the barrel is cocking to the side when contacting the locking block, but thats a whole different thread. I contacted KKM and he pretty much told me "Thats normal, if it groups good don't worry about it" but he also said "Send it to me and I will look at it if you would like". Some fellow shooters say "send it back" others say "shoot the darn thing it ain't broken in yet" I was just wondering what the broad spectrum of people on here thought, and if anyone else experienced this.
Let me add that I do have a hand load using HS-6 and 115 JHP's that cycles the gun and shoots flat but the wear marks are still on the barrel and I am concerned that they will get worse and start effecting the accuracy, or, is it like slide peening? (Oh no, now I'm thinking 2 much)