Originally Posted by ovastafford
How temp stable are they???
In my experience, not as bad as RL22 and not as good as H4831. My 7mm RM Remmy was 2 1/2" off diagonally at 100 yards. Why diagonally? might have been the wind or maybe just me. Possibly only 1" off POI.
Accurate mag pro is a double base powder with excellent temperature stability.
In my cold weather testing i detected no difference in POI between 70*F and 0*F. I have switched to Magpro in my 7mm because I hunt elk in very cold weather hunting grounds. 168 VLD @ 2998 fps.