I would guess a average would be ok. It also depends on how close your going to keep your load to any pressure signs.
If you keep a bit below pressure signs, when summer rolls around I doubt your going to blow yourself up. But if it's your load for your rifle and your the one shooting it, just remember to monitor cases for pressure as the temps heat up. Think of it as a unfinished load until summer has passed.
I wouldn't give the load to a friend or learner who won't keep pressure in mind, at least until proven.
What caliber are you shooting?
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