Let me start by saying I know NOTHING about rifles ... always been a handgun guy ... but the wife!!! has been saying we should get a rifle, just in case everything falls apart and we have to start shooting the neighborhood deer to survive ... lo and behold, I get a flyer today from Cabela's offering a Savage 110 bolt action, with a Pine Ridge scope, in "various calibers," for $500 ... is this a decent deal? what caliber should I be looking for? 30-06? something else?