Another fan of the 77gr TMK. It's actually pretty impressive.
The only bummer is high volume practice.
I have a few 77gr MK, 64gr BSB, 64gr Win PP, as well as a couple boxes of TTSX, TSX, and even Gold Dots. Any of these work. My least favorite are the Barnes.
I buy bulk 55gr Hornady sp or fmj for practice or when running drills.
The TMKs are fun at a little distance and slow fire. I keep them loaded in handy mags. My pistol shoots them as good as my rifle.