For a review of the importance of shooting technique check out some of these videos at
Accurate Reloading/Videos These guys are shooting the .577 T-Rex and the .460 WBY. There is even one of a .700 Nitro. Most of the .577 shooters are having problems with the recoil. A little blood is drawn, now and then. Considering the recoil is running at about 150 lbs, that's forseeable. BTW, there is a shooter not shown, Mitch. He shoots sub 3/4 MOA with his .577 off the bench, no brake.
P.S. I'm in FL, ELKampMaster . I just didn't think it mattered that much. I'm thinking of moving here, one day.