I agree. I loaded RL-25 for my 300 RUM to great effect, until RL-26 came along, and then RL-33 (unobtanium). I take care to develop loads in early spring or fall, when temps are around 40 degrees, so they're in the middle of the range I hunt (in the Rockies). I avoid hot loads, so if it's an unusually warm day when I'm out hunting my rifle won't explode. Temp sensitivity doesn't affect my hunting too much that way, and RL-25 works real well. Likewise RL-22, which in my experience usually yields a bit more speed than (the less temp sensitive) RL-23 in the 264 Win Mag, 7mm Rem Mag, and 300 Win Mag. I think handling a wide range of temps without performance variation is simply asking too much of the chemistry. Just load to the middle of an intended temp range, and avoid real hot loads so you have a safety buffer.