Well so far it all seems a bit up in the air, and when its like that, that means versatility is a high point.. stick with the .30 cal, there's way to many options, from tossing out 224 sabot rounds from it, to the heavy 200+ grain projectiles. If you want magnum, bypass that 7mm, the 300 can do everything it can only better. as far as models go, thats a tough one, I'd personally favor the Win Mod 70, I just bought another Rem 700, but the win's action just seems nicer, always has to me, its a coin toss though and ya can't go wrong either way.