With my guide gun and Hornady 350 g RN bullets...
RX7 worked very well up to 1880 FPS. Which is as far as i wanted to go for elk and moose loads.
Some of the best groups where at minus 20 C in preparation for a December cow elk hunt
When desiring a load in the 1550 FPS range AA 5744 was fairly accurate in premilinary testing
But I had to ignore the wide spreads on the chronograph
Not sure why this was
I use a past shoulder pad and mechanics gloves
Makes a real difference with warm loads and when looking for accuracy shooting off sand bags