I bought an old Hollywood single stage press at a gun shop today. This thing is a tank. I can't find a whole lot about them on the internet. I ordered a conversion for standard shell holders. I can find a few pics of similer ones. This one has a second threaded whole, threaded for a die (?) Behind the one that lines up with the shell holder. Anybody know what it's for? Anything else y'all could tell me about this press would be appreciated. Thanks.