I am in need of making .44 Auto Mag ammo. I could buy the brass but it is expensive and the original method to make the brass was to cut it from any '06 family of cases. I've got plenty of 30-06 brass and an old Logan lathe.
So the question is how to hold the brass in order to part it off? I only have a three jaw (or four jaw) chuck. The brass needs to be located in the lathe at the same location every time. I could make a depth stop for a collet easily but I can't think of a relatively easy way to do the same in a chuck.