All of your powders are too fast for top velocities in the 44 mag except Varget, which is a rifle powder and way too slow.
I prefer Accurate 4100 or Ramshot Enforcer (both the same powder, just labeled differently). They give top velocities, burn super clean, meter beautifully out of powder measures, and do not require magnum primers to ignite. You can check their online guides for loads.
http://www.accuratepowder.com/wp-con...d_data_3.5.pdf
http://www.ramshot.com/wp-content/up...dgun_rifle.pdf