Man, I am jelous. I bet that is a sweet gun.
I have one load with two different bullets that I use in three different .41's all with great results. I have a Blackhawk,Redhawk, and of course a Contender and they all like 18.0 Grs of 2400 with either Speer 220 gr JSP or Hornady 210 HP-XTP. I have always used magnum primers with 2400.
I shot the Speer for a lot of years and tried the Hornady. I like it just as well. The deer don't like either one very nuch.
Good Luck and enjoy that new toy!