Been shooting the .30-30's even more and will have to modify the above based on experience:
A. I still rest the forend on the bipod, but now grip the forend with my weak hand. Reason being, my rifles have stiff triggers and when the sear breaks, I usually pull the muzzle upward. Securing the forend with my weak hand helps keep the lightweight barrel from rising so much.
B. I now use about the last half inch of my trigger finger to contact the trigger face. Seems like I am more easily able to press it straight back this way, not left or right.
C. Make sure that the curvature of the buttplate is centered on my shoulder. I have a habit of letting the toe of the stock dig into my shoulder, which is of course uncomfortable and doesn't produce good cheek weld.
I'm gettin' there, I suppose. These days my standard load for all my rifles is the Lee C309-170-F bullet sized .310 over 17 grains IMR SR4759. Unfortunately, 4759 is extinct so at some point I'll have to find a substitute. I've used Reloder 7 and Hodgdon 4198 with good success before, so probably one of those.