Making 9mm/357 jackets from copper tubing

Simple and quick video (not a how to video) about how I make my 9mm and 357 bullet jackets from ordinary copper tubings. The press and dies I use are designed by me and these dies have a carbide insert. The one closing up one end is just a 4140 steel prototype. I start with a 3/8 copper tubing, fold one end over (about 45°), reduce the cup diameter and finally close up the bottom.