The .30-06 can be used for the smaller game with the lighter weight bullets so that gun should cover those needs for you so a new centerfire isn't really needed. Go with a .22lr. Everyone needs one (at least one) offers great inexpensive shooting time and still a great small game getter. I can't say the 597 would be my first chocie but they're decent if that's what you like.I think the local Dick's has them scoped for under $200.