My brother just put together an AR in 458 Socom but it's having problems feeding flat nosed bullets from the magazine. It strips the round out of the mag but it gets jammed at like a 30 degree angle and won't go in the chamber. It's like the feed ramp needs to be longer maybe...? Slowly letting the bolt carrier go does grab a round and
I'm assuming flat nosed bullets are known to have feeding issues like some HP's? he doesn't have any thing else to try right now but I thought I'd ask here to see if anyone else has any ideas in the mean time.