Jeff, as you know, the 8400 MT is a different animal than the 84M/L MT's. I've had a few, 300's and one 270 WSM. Friend Dober had a 7mm WSM. While the WSM's have some torque, in many ways they're easier to shoot, being around a lb heavier than the 84M/L, and with a fuller stock.
A bigger scope seems right at home on the 8400 MT. Mine always wore 3-9X40's.
Furthest I ever took a BG animal was 548 lasered yards with the 8400 300 WSM, running a 180. Was a bedded antelope buck. I laid prone over my daypack and anchored him with one shot. The 3-9 wore dots.
Still, I always felt the 8400's should have had a no.2 contour, rather than their no.1... weight forward helps shooting. Strapping an anvil on top of a light, thin contoured rifle seems a poor solution to making them more shootable. Balance certainly suffers.
