When I purchased my Magpul AI mags I was curious how well they would feed. I asked the guy at the store if we could try some out in his rifle out back and he did. He used his Surgeon 591 with AW cut in a JAE chassis and was feeding his 6Dasher rounds beautifully. That was only 10 rounds from that one mag though, so not sure how well it would do over a longer period of time. I have been using them for a year or so with my 6.5x47 and I will just say that I try to use my AICS mags when I can. I have 4 magpul mags and while they do work they seem to have issues from time to time. These mags have cycled about 3000 rounds into my action and have seen quite a bit of mud, rain, sand, rocks, and grass.