RE: 300 win mag
Is a 300 WM going to do anything a 30-06 can't do, no. It will however do it a little faster. If all he plans to hunt is elk, moose, and black bear than the 270 is plenty as long as you use the right bullet. The 30-06 a little better, the 300 a little more. Being a handloader when faced with this decision with a 307 and a 30-06 I decided to go to the 35 Whelen. But then I have a thing for working off of the 30-06case. I agree with BB and Skeeter, add a little more spacing in your arsenal. After all dead is dead and you will not be undergunned with a 300 but you can also never be overgunned either. Here is some other food for thought, with all of the newer cartridges available today there are some other considerations that should be thought of. Are you a handloader? or will you be buying factory cartridges? Moving up to the Magnums also cost more money when purchasing ammo.