RE: Looking for new rifel cartrage
I love the 30-06 round. Unless you want longer range or bigger game, I would not go up to the 300 or the 7mm.
If you intend to go after deer, try a 270. The 270 will do everything the 30-06 will do when it comes to deer. A little nicer to shoot as well.
If you do feel undergunned or you need another 100 yards added to yur range then the 300 win mag is a good round. Keep in mind though that the kick will alway be there. 300 win mag rifles tend to be a little on the heavy side so consider that as well.
Tifford
Hold Steady