Needed a way to seat gas checks on before running them through the .314" lee bullet sizer (gas check does not seat/crimp adequately/evenly if run through the sizer). Designed and 3d printed a gas check seating rack for the lee 312 160. Works great, still fiddling with the tolerances so the bullets drop easy but is otherwise functional.
Bullets and gas checks positioned along the rack by hand
Seating them on a turret press using a lee ram prime shell holder installed upside down and a lee bullet sizer ram punch
After seated: