For the most part, the bbl. They're under different series, the 110 is a Tactical rifle, under their law enforcement series, and the 111 is one of their typical hunting rifles. Truth be told, there probably isn't any difference other than the weight, however, the 110's are under $500, so there's an upper hand for each of them....the 111 is lighter and would make an easier stalking rifle or long portage rifle, while the 110 is cheap enough that you can afford the heavy bbl version to take into the stand. I've got a 110FP in .308, and a 12FVSS in .22-250, both are extremely accurate heavy bbled rifles, and neither of them cost me over $500 for the base gun. I got the action slicked, target blocks, target scopes, and glass bedding done for cheaper than the competitors heavy bbl rifles would be for just the "stock" rifle.