R25, 26, 33, 50
H-1000
50BMG
Retumbo
AA8700

You're going to be way under top efficiency at 155 grains. If your 155 grain limit stands, stay on the "faster" side of the slow burning powders. I don't go any lighter than 140 and IMR-7828 in a 7-STW.

Wollen nicht krank dein feind. Planen es.