DD/Huntr; I will try to get a few pics of the cartridge through the forming process this weekend.
There is more than one way to skin the cat and I have had a couple of conversations with Bill Steigers at BBC;he is instructing me on how to fully form the Mashburn case with tumbling media(corn husks),large pistol primers,and Bullseye pistol powder.
That means I can form cases from new brass by firing out the back door at the house...the neighbors will love it,but hey this is NH...there are always guns going off here!