The "correct" powder choice is somewhat subject to bullet weight, in my book. I know for sure I don't use the same powder for 55gr bullets I use for 77gr bullets.


. . but you know me; if I can't get 4400+ FPS out of a 16" barrel using 55gr bullets, I monkey with the powder until I do. So it probably is no surprise to you that I change powder for heavier bullets.