Had a chance to pick up some of these Winchester primers from Midway, but one of the reviewers gave them only a one star rating (out of five). Said he loaded up a box of .357's and .38 Specials with them, and the primers tended to back out after each shot such that the cylinder wouldn't rotate to the next round. Did this with both the .357's and .38's. This gave me pause to think about my purchase. Of course, by the time I decided to take a chance, they were already gone (is this nonsense ever going to end?). So was wondering if anyone here has encountered similar problems with these particular primers.