I have a good laod for my Montana with the 200 Interlock now. It is a max load accordng to the Hodgdon website consisting of 47.0 grains of 8208, a WLR primer, and 308 Win R-P Brass.
The load went through the chronograph at an average of 2627 fps with a sandard deviation of 7.23 fps and an extreme spread of 16 fps. This is coming from a factory, 22" Kimber barrel.
This load hovers around MOA in my Montana. Some groups a little less, some a little more.
I think this bullet coupled with the Federals mild velocities will make the best combination to suit my interests, and the Interlock bullets are readily avialable and inexpensive to boot.