Our upcoming match has 8 stages, 4 low round, 4 high round count. Given we are a 10 round state - I figure from the stage descriptions about 18 mags plus a barney mag. That is if you shoot straight 10 rounds before a reload as compared to figuring out where to reload, usually about 8 rounds and reload to try to be reload efficient as you move, etc. Or you screw up and need a mag - like you dropped one, etc.
So, I'm gathering all my 10 round G17 mags of various generations that are Glock and 4 Magpuls. I come up with about 26 mags. I have a slew of ten round Glock mags that I bought when the AWB sunsetted and 10 rounders were dumped really cheap. I bought them for IDPA (had to ditch the higher caps for NYS - sigh, same old rant). All will be loaded with Herter's or WWB. Have some Tula for backup. Tula made a guy mad at me at a match as he was of Ukranian descent. Do YOU know they are Russian? Dude - 1. I am solid Easter European, 1/4 Ukranian. 2. Bought these during an ammo crisis way before the Orange Man's idol invaded Ukraine. He was molified.
Now, I kept two 10 rounders, one with Critical Duty and one with Buffalo Bore Kill 'em a bar before he was 80 (haha!) for each G17 in extremis - even though the G26 is the EDC with a few HP mags at the ready.
I prefer to preload to avoid having to screw around off line. I will take an extra box of 9s anyway. Lately I've been shooting out the 10 rounds if that works as the reload planning isn't my thing. If it's a two mag stage, might due 8 reload depending on configuration. Hopefully, my brain will realize the differene between Virginia and Comstock as I blew a stage as I ignored the mandatory reload. Sigh.
Going to shoot production as my last RDS run was crappy - might be due to lack of practice. I alternate - my EDC is irons. I don't want to screw around looking for the dot or past the dot at the target or for a divine sign in the SRO window, whatever for this match.