You guys are making this way harder than needed. Disassemble the press, brush the rust off the body (you can treat it with a rust inhibitor if you like), mask the ram opening and die opening and paint the press body. Toss the primer arm. Buff the linkage and the handle and oil it lightly. Use 0000 steel wool on the ram to remove the bulk of the rust and oil it with gun oil. Let the ram sit overnight and repeat the process on the ram. You may want to use white grease on the ram. Put it back together and get years of service out of it.
are making it harder than needed!!!??? We
would let electrolosis do the work...you buff, paint, oil, grease, steel wool; all hand work!