A good friend likes to shoot my firearms when she can, about once a month, so she buys reloading components to make sure she has ammo to use. Years I have been giving her time and ammo, but I am no instructor, suck at it, even though I try what little I can.
A year or so ago I started downloading her mags to 10 rounds, as she would load them up to the top and just blast away. Today, I suddenly realized she was missing more and more after the first few. I stopped her, downloaded her practice mag to 6...and like the French say, wall lah. Every round good solid hit, and good tight groups that any casual shooter would be proud of on the steel - 8 inch circle at 11 yards. After 7 rounds her trigger finger would start to hurt a little, (Safe Action style trigger with standard trigger safety), and she would start changing her trigger pull almost unconsciously to accommodate it. With the short rest bit to load another 6 rounds in the mag, the finger would recover enough to pop another 6 good rounds.
I'm sure every professional here has heard/seen this, but it was the first for me, goofy, isn't it?