Still testing with new upper - Duramag 6.5 Grendel Stainless Steel 10 Round Rifle Magazine

So far, this magazine seems to work well. Using with an existing self assembled PSA lower and array of parts. Upper is a recently purchased 18 inch Aero 6.5 Grendal intended for hunting. I've run four boxes of various ammo, and only issue is with AAC Ballistic tip not being picked up when cycling a new round. Based on what I'm seeing from the other ammo and ejection patterning, I think it's probably a case of the upper + ammo being over gassed. Guessing the bolt and buffer spring are outpacing the magazine spring. Already using a T3 buffer weight, so next step would have to be an adjustable gas block. Again, at this point I don't have any reason to believe it's a magazine issue. Would likely purchase again.