I've honestly tried to search for an answer to this, but cannot find an absolute because it is never talked about specifically, only brought up when discussing other things. So my question is, do Ackley Improved cartridges have a hard time feeding properly from a magazine? I suppose that maybe the question is subjective so I figured I would give an example. I have a savage 111, pre-accutrigger, flat back receiver. When I first got the gun I had thought about building a .260 and getting a CBI barrel with the match chamber. Building it off the long action would let me seat bullets out as far as I needed I figured. I revisited it over the weekend and am almost sure that I want to build one in a .260 AI with the match chamber. However, the only hiccup I can find was that there is a possible issue with feeding from a magazine. Is this the case? I was thinking the longer action might help and if there is some issue then maybe there is something I can modify?