Product reviews for Auto Prime

Initial setup take some finesse but straightforward. When using, you learn to hold it as pictured to make sure primers in proper position. You quickly learn the 'feel' of a proper primer seating but check manually. If priming several calibers (I do 10+), the separate shell holder kit is a good added item. [Intuitive enough that I can prime 200+ shells while watching a TV movie.)

Bought one because I just wore my old ones out.  Used on some military brass and found out its not as strong as the old ones.  Broke my Large primer center section on the first batch.   Got through but was rough at the end.  I miss my old ones.  I suspect that the small one might not have the same issue of broken plastic gumming up the passage.

I use this tool only, don't like my press mounted primer so I switched to the Lee auto prime and haven't looked back.