i'm shooting a 9.2 pound all up n runnin 338 rum. it shooting 250 grain sierra game kings at 3052 fps.
mine has a brake, and the last time out 33 rounds went down range. one of the most comfortable rifles i own.

my friend shoots a lm, same speed and with a much heavier rifle and knox comp stock.
it's brutal to say the least. no brake.

as much as i hate em as well, i don't think if recoil being equal, i would want to shoot but a few rounds without the brake on my rum.