As others have said, that Adrenaline dump cooks your nervous system.
I have found that my mental prep, including breathing techniques really helped me on running the shoot house drills.
https://nursing.rutgers.edu/wp-content/uploads/2020/07/Dr.-Weil-4-7-8-Breathing-Exercise.pdf
Reload?
Dang near as expensive as factory loads now.
SPP's at $105/1k means over $200 per thousand loaded of 9mm.
Was $26/1k, for primers, could get into the $140/ik rounds.
Somebody has a chart of rounds fired by everyone in the Civil War through the Afghan war.
As far as I recall, rounds fired was a rocket ship up, number of hits stayed fairly constant.
Shift in tactics - Closed ranks to open ranks, supressive vs aimed fire, and hiher cyclic rates cover a lot of...
Might toss on an AFG and use it for grip, help keep the heat at bay. They are legal on a pistol.
https://magpul.com/afg-2-angled-fore-grip.html?mp_global_color=118#