Frequency- no doubt also.
Gets hot in Orlando, a couple of mags of 147g rounds, a couple of carry rounds, just to check zero. Done. Glock 19 carry, and IDPA match pistol.
Just had my Wife join the Club, at 5'3" and 120, she gets tired quickly, but her accuracy is great, 30 or 40 rounds, perfect. Couple of times a week.