I don't use the 44 much any more. It's 38 short colt or 500 S&W these days.
Quick load shows pressure under 33,000 psi and velocity around 1130 @ 8.5 grains. 7.6 gets you around 1060 and 26,000 psi. Your barrel may be faster or slower but this gets you in the neighborhood.
Unless you just want recoil and muzzle blast then the n320 is your go to powder for that power factor. It is not a magnum load by any stretch but the most efficient for your game. The other powders can work however they will have more pressure upon bullet exit (recoil) and I do not know how they react when loading at 60% or less case capacity.