Of the ones not on your list that I have experience with and works well, AA #9.
I don't use W-296/H-110 anymore (Not worried about the last little bit of velocity, a 240 at 1300/1350ish FPS will do all you need out of a .44 Magnum), I won't use Lil Gun, no experience with 300-MP, haven't tried Enforcer in .44 Mag.
AA #9 and N-110 will give great accuracy, and don't complain if you are not at max.
I don't use W-296/H-110 anymore (Not worried about the last little bit of velocity, a 240 at 1300/1350ish FPS will do all you need out of a .44 Magnum), I won't use Lil Gun, no experience with 300-MP, haven't tried Enforcer in .44 Mag.
AA #9 and N-110 will give great accuracy, and don't complain if you are not at max.