It's 56° here and won't change 10 degrees in 8 hours. I'd need a jacket if I head into the mountains to shoot.
Ya need to move up to the Canyon area, the part of Arizona that looks like home to me.
You are where you are and it does get hot.
Your lower elevation shooting numbers 1700 ft will be no good at 7000 ft...but Kestrel can help with that, for many.
I never used it hunting big game, just sight in for 100 yds. Or use the point blank method if expecting a long shot.
Never needed any of that cause the elk stay off the meadows and run the deep pole thickets several canyons in. Shots will be from 35 to 100 yds...mostly 35 yds and on the run or one good leap and they dissappear. Let them run, stop, wait, and track them down again, and kill them. Wherever they go you go.
I lived there for awhile in a log cabin with a tin roof, in the Blue Mountains along Onion Creek on a 4 wheel drive trail, working gold claim security for a mining operation.
Back to your template problem. You'll probably have to compromise, and see if a moderately temp stable will fit your needs.
What game bullet do you plan on using? Some places copper bullets are required, I always used jacketed lead.
Whatever the bullet it should be readily available and cheap enough so you can afford lots of practice.
What powders do you have available? And are they stable enough. H4895, RL 15.5?, Winchester Staball series, Varget, H4350, or IMR 4451 Enduron series pretty slow. Can enough be put in the case to reach s descent velocity in a hybrid case?
Cartridge overall length? Water capacity?
And ya come up with an answer as to which of the less temp sensitive powders are usable...not many.
One bullet and one powder for everything you intend to kill. That will build confidence, when you practice with it all the time, any temprature,
any elevation.
Take your 308 small game hunting alot. Shoot squirrels & rabbits running and standing, with your big game load. Use various field shooting positions.
I don't live in Arizona, but spent a summer in Tuson.
