I was out Sunday morning testing with a few friends when one mentioned the pockets on his 6.5x47 cases were all loosening to the point the primer would just hold in the pocket. I took a few of his cases home to check with different primers. I tried TulAmmo small rifle cci 41 and cci small rifle magnum. All primers seated with very little pressure. I can't measure scientifically only anecdotally. I did notice the cases had to be pushed into the shell holder so it made me wonder if the primer pocket expands by itself or does the pocket enlarge as the base expands. I tried a ring die to see if that would matter but it doesn't reach far enough to help. After writing this it sounds like a just what happens question since the pocket is stretched and should be discarded. My friend said he has 3 or 4 hundred cased that have loosened so I thought I'd ask what might be happening. He does shoot midrange bench with a 140 grain bullet. That's about it if anyone has an idea I'd be happy to listen. Thanks