Is pushing the barrel down a bad habit that is "learned" or is it merely a result of "muscle memory" from the body reacting too, anticipating and controlling recoil? Is it something that we need to consciously work on NOT doing. Or is it something we always do but only notice if there is a click no bang?
When shooting my revolvers at times I will leave a chamber empty or after shooting six I'll keep shooting and pay attention to what I do. If anything, I find I push the barrel down.