200 yards is a long shot with any non-smokless MZ. It's doable, but is going to require a lot of range time. Keep in mind you are looking at 12-15 inches of drop if zeroed at 100.
To answer your question, I use Barnes 245 gn Spitfire MZ bullets with 105 grains (by volume) of 777. That's a boattail bullet which, in theory, is better for longer ranges. I have killed a couple at 200 yds and practice that range every year.
Seems like most people have switched over to BH 209 powder at around 110 gns (volume). I just haven't made the switch.
PS, I'm shooting a TC Omega