I have Promo but I'm struggling with it to get a 1oz load that cycles my sons automatic with him shooting it. IMR 700x, Alliant E3 and hodgdon international all work good. The Promo, not so good... Actually, I'm saving it for my 1oz loads from my Browning pump or 1 1/8 loads for my automatic. It works good for those two, and 7/8 loads for my pump... But I shoot a fraction what he shoots so I need powder for him.
BB