AR Comp has worked well for me, along with RL15.
Bought some 77 TMK's last week, haven't loaded them yet. Sierra's mobile app shows VV N140 for the accuracy load for both 77's so that is what I'll try. Sierra says they require 1-8 twist, but I think I'm just high enough that they'll stabilize in my 1-9, we'll see.
They should stabilize at 100, but out to 400, its a gamble.. BTDT...