Forgive me if this is a noob post. This is a serious question, and not a sarcastic one. This is something I've often wondered about, since I own both a rifle and shotgun. I'm a little confused on their ideal applications. 1) Do you need a rifle for a defensive situation in "SHTF", or will a shotgun suffice? How do you define "need"? 2) What kinds of particular defensive situations dictate using a rifle rather than a shotgun? The reason I ask, is mainly because of cost. When most people talk about defensive rifles for "SHTF", they are talking about AR15s or other auto-loading military-style rifles. A good quality AR15 or other comparable rifle system is easily twice the cost of any shotgun, after you factor in magazines. As you all know, a shotgun like a basic Remington 870 or Mossberg 500 or 590 runs $300-500, and does not require any additional magazines or special tools to function. You get the ability to hold 6+ rounds, and fire slugs, buck-shot, bird-shot, and/or specialty rounds, given your circumstances and needs. All for under $500 in a very reliable platform. The question is... for what circumstances or defensive situations would you require an AR15 or other auto-loading battle rifle instead of a shotgun?