For the young-uns here that have never even heard of the early lee hand primers.
They worked quite well, you varied the depth of the primer seating by how far the shell holder was screwed into the body. The ultra fine threads were easy to get cross-threaded, so you wore that out before the cam on the handle wore out. What I did was buy a body along with a shell holder, then leave them assembled. Since this was very early in my reloading career, I only had 3 calibers that I reloaded, two took the same shell holder. (308 and .243).