A few points I'll add.
Don't go too heavy on the barrel contour. My PacNor #2 (about like other barrel makers #3 contours) is as heavy as I want to go. You still need to carry it.
I like longer barrels so my 280AI #2 is 26" long and I'm getting 3050 with Magpro and the 162 Amax. This is squarely in 7RM territory yet I'm seeing zero pressure signs and Quickload shows pressures below SAAMI MAP.
As far as stocks go, an aluminum bedding block stock is no easier to use than a well designed and manufactured stock without a BB. The bedding block will have to be machined at the top of the tolerance to ensure that all actions (with their own tolerance range) will fit. This means that you'll likely have a somewhat sloppy BB to action fit. Perfect for skim bedding. The same goes for a good stock without a BB like a McMillan. I'm not convinced that an aluminum BB is the best thing to set a steel action in either. Aluminum has 2X the thermal expansion of steel.
A 110 benefits just as much as a Rem 700 from being trued. Some folks claim the floating bolthead obviates the need for truing but if you think about it that is wishful thinking. If your bolthead has to tip make full locking lug contact with both lugs then that throws the boltface itself out of perfect perpendicularity with the bore. All that said, I think that truing an action does more for the shooters psyche (and the gunsmiths pocketbook) than it does for actual shooting in the field.
Just my $.02
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