Starting a new thread for what it takes to make jackets from copper tubing....
Here is a look at the tooling necessary to make 3 different length 30 cal jackets from 5/16" copper tubing, the process and tooling is similar, if not exactly the same for 1/4" and 3/8" tubbing as well. It does take more pressure the larger the tubing is.
I use the soft rolled copper tubing with these dies.
3 separate length copper tubing jacket forming base punches ($249.00 ea.)
1 copper tubing jacket form die ($499.00)
1 draw die to reduce the jackets from .316-.305 ($249.00)
1 draw die for the lead cores to take them down from nominal .250" to .233" ($249.00)
2 draw die push through base punches that double as flat end finishing to jackets ($69.00 ea.)
1 lead draw die push through base punch ($69.00)
1 core seat base punch for the thicker walled copper tubing jackets ($69.00)
all set to exact diameters and lengths..... a bit of labor on my part.
Brian