I am asking the same question - should I get a 7mm BC, wanting the shorter barrel, with higher velocity, on a hunting rifle that will wear a suppressor full time. Agreed, I probably shoot 100 at most to sight in and get used to the gun, then 20 rds a year for the life of the gun, for me that is. Personally , I feel it is one of the better updates to metallic cartridges in some time. Why not up the pressure, and get better performance.
Shorter barrels, with suppressor is my preferred set up.
I'm a fan, and hoping to be a user soon of the new 7mm BC