Couple possibilities.
1) The nose of the rounds may be bumping the stop out, although I think some other things would have to be out of spec for that to happen.
2) The slide stop is bent. Check to insure that the angle between the cross pin and the lever is at 90 degrees. Some times these get bent (or come that way) and the warmer load may be aiding it in its escape attempt. If not original, the stop may have several problems such as the above mentioned as well as a radius at the juncture of the pin and lever which might not let it sit flush with the side of the frame.
Start looking there for your problems and I'm sure you can diagnose it whether it's one of the things I mentioned or something else.
1) The nose of the rounds may be bumping the stop out, although I think some other things would have to be out of spec for that to happen.
2) The slide stop is bent. Check to insure that the angle between the cross pin and the lever is at 90 degrees. Some times these get bent (or come that way) and the warmer load may be aiding it in its escape attempt. If not original, the stop may have several problems such as the above mentioned as well as a radius at the juncture of the pin and lever which might not let it sit flush with the side of the frame.
Start looking there for your problems and I'm sure you can diagnose it whether it's one of the things I mentioned or something else.
