Another huge MK fan.

Ditto what they have said. Most mk's shoot very well with 90-100gr loose powder (Pyrodex, 777). I too have had great luck with .452's, but my current hunting load is a .429gr/44cal 240gr Speer Deep curl. This bullet is very accurate out of my gun with 100gr pyrodex, and the performance on game is pretty awesome.

Personally I like the #11 setup over the 209. To me, their #11 system is about as good and reliable as any ever made. I prefer RWS caps.

Make sure you cover your scope between the rings so it doesn't get burned from the blowback (bra, tape, etc). Enjoy your rifle, they are great guns for sure.