EDITED To include: all feed and load nicely through my push, except that S&B are occasionally quite not easy to seat. The only dud primer I have at any time had was an S&B LP. I feel it had been missing an anvil. Win appears to provide the loosest QC https://edwinmanxi.humor-blog.com/31016682/the-5-second-trick-for-federal-large-rifle-benchrest-primers