Just my opinion but unless you hunt the world from northern Canada to the equator or are prone to firewalling every load to just short of locking the bolt up on your rifle the temp sensitive issues is overstated for the average hunter/shooter.
I agree 100% I've used double based powders like W760 & W748 for the last 25 years in all types of weather and never had a problem. In my opinion, the only time you'll ever have issues is if you left your ammo on the dashboard on a hot summers day. But nobody in their right mind does that anyway.
I agree and H414/W760 is a great powder in the 7x57 with 140-160's. I have shot so much game with this rifle/powder combination that I wouldn't even guess how many, temperature sensitivity doesn't worry me much, it's a hunting rifle, not a 1000 yard match gun.I just work up a load when it's 100, so I know it's safe, then hunt with it.
