Hate to disagree but even with modern powders temp has to be watched esp if you are running near max loads. Load up a some of rounds with ADI, Hodgon powderX2 and 2 with win ball powder. fire one of each. Then hold the others in your hands until the powder has had time to warm and fire them. I think you will find a difference in the recoil of the one with the win powder.

Cheers
Greg