...the bolt tended to ride over the heel of the cartridge, not picking them up....John
I had this issue with my newest 308. I cured that by removing the issued magazine box and spreading the top wider open at the rear. Not the lips, but the whole of the magazine. I had to squeeze it together to fit it into the magazine mortise, then it's own spring tension spread it outboard for a snug fit in the mortise. Then it fed 100%.
