I bought a different gun last week. I shot about 10 boxes through it with no problem. Today I went to a 50 target money shoot. The gun is a Kolar with adjustable trigger for length. I also shoot a release trigger. I put the gun up and set the trigger and the gun went off. (That's why we always point the gun in a safe direction). I never called for a target and no target came out when the gun went off. At no time was there a target in the air. The guy next to me starts to put his gun up, and I said wait a minute, I didn't call for a target. I proceeded to call for another target and got it. Now, I did miss one target later. I walked off the line thinking I had a 24. We walked over to the next trap, and the scorer said I gave you a loss for when your gun went off. I said, I never called for a target how can you give me a loss. He said I just went in the office and asked, they said "We shoot ATA rules here, and that's what the rule says". I said "OK" I'm fine, I'm not going to argue. I used to shoot ATA and I never heard of that. When I left the club that's how it stood. Did I have a 23 or 24? Because the same thing happened on the next field.
Got home and looked at the trigger, the set screw that locks the trigger was loose. The trigger was falling forward when I opened the gun and when I was setting the trigger it would catch enough to set the trigger but then it would jump to the next setting and releasing next setting causing the gun to fire!