From my experience you'll need to do a little clean up work on the flashing from manufacturing. I've got mine setup up so CCI SP primers load consistently with no issues and very quickly. Win SP, seem to be too inconsistent to work really well for me. I can get them to load but I have to stop and bang the plastic tray to get them to drop sometimes. sounds harsher than it is, but they aren't as smooth as the CCI.
Large pistol is really hit and miss, like the Win SP, they take a bit longer to get to work. It's still easier than trying to load my Dillon primer tubes by hand. I had an issue with one of the trays, and I wrote to Franklin Arsenal about it. They sent me a new one in a few days. Pretty much the same as the original, it needed a bit of clean up.