Re: New Allen Mags??
Nah, we're not really pros on the subject. We just have the right tooling to do it quick. These cases were made with a drill press running the cases into a cutting plate covered in oil of all different sized holes until the proper dimension is achieved. If these were real cases we intended to actually shoot, we would not go the full 25 steps it took to neck these particular cases down. We would only go a maximum of 7 or 8 steps. Then we would neck turn and fireform to straighten them. This method actually produces brass that is really concentric but at sometime, the thickness built up in the shoulder/neck junction will work it's way up into the neck again and more neck turning is in order.
If it's not far, it's boring.