What gives Reloader 26!?

[MT_Chad]

My bad, pretty sure I was thinking of 25. A guy I work with did some extreme temp testing and had poor results, I will have to confirm which one, it was in a necked down 7 mag wildcat, so it must have been one of the slow ones.

 

[Beanland_fan]

Per John Barsness, testing and conversation with Alliant shows R16 and R23 to be their most temp insensitive powders.