If the rifle weights around 20 lbs I could shoot it all day with out a brake.

I have a 17 lb 300winmag I could not stand shooting with a brake (huge concussion blast gave me headache, and I'm sure folk around me had a headache too). The brake was a bit too efficient in my opinion. The rifle didn't even move with it on.

After I took the brake off, it kicked, but not enough to be unpleasant.

Shooting 240smk at 2,750 fps out of it. Might not be as powerful as a 338 LM, but the comparison is worth mentioning.

One more small detail.... The rifle has a LIMBSAVER recoil pad. By far the best recoil pad I've ever used.