I have only ever used the Square Deal B because I don't reload center fire rifle in big volumes. It does take it's own dies,not 7/8".
I have loaded 9mm, 38 sp, .357 mag, 45 ACP, and 44 mag on mine. 44mag, I found I was stretching it's capability a bit and I ended up sizing on a std RCBS Rock Chucke first.
Along with all Dillon systems they have gone up in price tremendously. You get one caliber of your choice with purchase, all set up ready to go. Complete shell holder plates and tool heads for other calibers, I think are about $125 each now.
Average volume is about 300 rounds per hour. They quote more. I may get 400 but that is pushing it and I get mistakes every once in awhile.
Consider it if there is no likely hood of wanting large volume of center fire rounds be loaded.
If .223 is in the mix, step up to the next bigger model
