RE: 7MM-08 VS 7MM REMINGTON MAG
A good 140 gr bullet fired from 7mm08 will kill any whitetail ever to walk the earth within 400 yards in the right hands,and with a considerable amount less recoil compared with 30-06 or .300 win mag. The 7mm rem mag is pretty close to the 30-06 you already have so it wouldn't make much sense to duplicate it.