Thanks for that Rule3. This is something, I mean an advisory, that you don't see very often so only a fool would disregard it.

I shoot up North in NH which is a qualifying latitude for moderate and some extreme cold. Cold and extreme heat are elements every loader should know about. However temperature with a specific bullet weight and the 41mag--period, is kind of weird. Like I said before something has changed and its best to follow the warning.

I once had about 300 rounds of 243 Ackley prairie dog medicine loaded up based on range testing in NH. I flew to CO to shoot dogs and coyotes with a buddy. Landed in Grand Junction and it was like 95 degrees. Went to sight in later in the day, ammo setting in back truck all this time. Shot maybe six to ten rounds some from each box-- all with serious pressure flattened, I mean really flat primers. Three days later temps fell to low 80's and the ammo was fine. Came close to a wash out but after that I backed off on travel loads