No, not what type of ammo they like. Feeding. As in going into the chamber.
A buddy sent an SOS. Federal Gold Medal Match 168s will not feed in his Aero AR10. The tip catches on the lip of the chamber using all different magazines. Evidently, Aero was less than helpful when approached.
He sent me this pic:
I took pics of mine for comparison:
Do you see what I’m seeing? I think his barrel has a sharp lip, while mine is definitely chamfered.
I’d be tempted to get my dremel, a wool brush and some metal polish and smooth out the lip right in front of the two feed ramps. But then, I have a high tolerance for DIY and risk.
KatNap Fever! 