Needing some help. This week I am planning on making my next buy. I am looking for opinions on what everyone thinks is the all around better gun in a post SHTF situation. I am between a lever action 30/30 or a .270 right now. The gun would of course be used for hunting and also defense if needed. My big question is what ammo is the most widely used out of these two and easier to find if need be? For that matter, what is the most widely available rifle ammo period?? Does anyone have any opinions? Thanks for any help.