RE: 300 magnum recoil
Nothing wrong with a brake if it is needed, but a good recoil pad like a limbsavers does help a ton. If you are worried about recoil just go with a 7RM. I've found that my 7 w/ 140 TSX at about 3300fps can do anything the 300 mags can do with less recoil and a little flatter.