Hey guys this is my first post, but I have been having some problems troubleshooting my 308 build, so hopefully you guys can help.
i have an SSA upper with a brownells BCG and a Red X arms 308 barrel **GASP** I know most people think red x is garbage, but it's the barrel I got.
So the problems I have been having is when I use 308 ammo (as opposed to 7.62x51) in which the round is not feeding properly. It seems as though the bullet gets stuck halfway into the chamber when the BCG tries to feed the round. This happens every 2 or 3 rounds shot. I tried multiple different types of ammo including Remington Core Lokt, PMC Bronze, and Perfecta, all same problem. However, when I tried American eagle 7.62x51, I went trough the entire 20 round box without issue. The 308 rounds eject forward of 90 degrees and have scrape marks on the casing (in the shape of a 1cm by 0.5cm rectangle, more or less) while the 7.62 was ejecting behind 90 degrees.
One round mag test is successful. When I try manually cycling the bolt, it seems to have the feeding issue also, so that makes me think it is the barrel since I eliminated the possibility of it being gas related.
if you need any more info, or need pictures please let me know. I appreciate any input. Thanks!