"Doesn't seem worth it for the extra thumping you get and the fact that 100 grains is enough to kill any deer, moose,or bison walking north america."

Exactly. With GOEX black powder the recoil of the 8.3 1 pound scoped rifle increased from 19.7 food pounds (100 grain) to 35.6 pounds (150 grain). This is an 80% increase in recoil for 192 fps increase in velocity. Would imagine the figures for the more powerful powders are much worse.

Hetested the FFG.