I target shoot at 15 and 20 yards. I am looking for small groups, hand held target shooting. Yesterday was mid-nineties and humid, so of course I went shooting. I shot a few magazines through my pistol with maybe a minute or so rest time time between and after a few magazines (25 rounds total?) the barrel was very hot and my accuracy seemed to go way down really fast. I went from keeping a two inch group at 15 yards to circling the outer rim of the two inch bullseye with only one or two in the red bullseye. Do you think it was the effect of the heat on the pistol ........or mainly general lessening of good grip on the part of the shooter? I know most issues are user fault, so no problem with being told that is the issue.