I suggest you look at this post from accurate shooter in regards to the ejector on larger case head cartridges in the AR-15. There have been a few shooters who experienced failure to feed and as last resort they modded the ejector which cured their feeding issues. This is a simple mod and can’t hurt to try.
http://bulletin.accurateshooter.com/2014...artridges/
I had one new 24 round ASC mag which consistently failed to feed from the non ejection port side. I compared the feed lips to my good ASC mags and the left feed lip was bent lower than my other mags. I used a pair of pliers to bend the feed lip up to match my good mags. Since tweaking the feed lip this mag has been feeding reliably.
Of all my 6.5 Grendel mags this one ASC mag is the only one I’ve had to modify. Mag and feeding issues can be very aggravating but can usually be solved by a process of eliminating potential causes.
http://bulletin.accurateshooter.com/2014...artridges/
I had one new 24 round ASC mag which consistently failed to feed from the non ejection port side. I compared the feed lips to my good ASC mags and the left feed lip was bent lower than my other mags. I used a pair of pliers to bend the feed lip up to match my good mags. Since tweaking the feed lip this mag has been feeding reliably.
Of all my 6.5 Grendel mags this one ASC mag is the only one I’ve had to modify. Mag and feeding issues can be very aggravating but can usually be solved by a process of eliminating potential causes.