EDITED TO ADD: all feed and cargo properly by way of my push, except that S&B are sometimes quite not easy to seat. The only real dud primer I've ever had was an S&B LP. I think it had been lacking an anvil. Win appears to provide the loosest QC https://manuelthufn.actoblog.com/32469391/federal-large-rifle-magnum-match-primers-for-dummies