I've found that in trying to improve my pistol shooting, just firing 50 to 100 rounds every week/every other week or so is more helpful and has helped me improve more than firing several hundred rounds in a session.
I enjoy shooting pistol much less than I enjoy shooting rifle (Partly because I'm not as good with a handgun I'm sure) and limiting my round count during pistol practice prevents me from getting burnt out or frustrated.
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