I’ve shot all the .22lr matches at peacemaker so far. There are no magazine limits. Most stages have a max round count of 15rds. The first two matches I shot my 10/22 with the flush 10rd mags no issue. I picked up a 15rd mags and have been using that ever since. Mainly because there’s no good mag holder for the 10/22 mags. So I end up setting them on barricades, which they fall from, or throw them in a pants pocket, which then digs into my thighs or ass when in position and also are hard to retrieve in the middle of a stage.
Honestly though I think I’ll be going back to the 10rd mags for some stages. I’ve had issues with the 15rd mag not clearing shooting positions and not allowing me to get low enough. So two 10rd mags and a 15rd mag and you’re pretty much set for a match.
25rd mags are just way to big, imho.