I think it is helpful to understand temp sensitivity. Not only for the competitive shooter, but hunting as well. Conditions change and can effect accuracy easily by as much as 1-2" @ 100 yards. Granted inside 100 yards where most deer are taken it won't matter.

Neighbor had a guy in his party fly in from cali to hunt this fall. I chased a buck and doe towards him and @ 200-300 yards he was off by feet. No doubt temperatures weren't the only factor here.but definitely one he could have been better prepared for.