Forming and annealing 5.6x61R vom Hofe cases can and will be pretty "iffy". Annealing too early or "burning" the cases can result in the cases collapsing in on itself. Sizing too much in one step can also collapse the case or cause it to "fold in in itself'" creating a weak place that will surely split. You can have an expensive set of forming dies made up or you can use dies of different calibers, already "on hand". Either way can work, you just have to work out a procedure using dies you have, can borrow or can buy. Work on a couple cases at first to avoid ruining all of them in the beginning. The idea is to make the cases small enough to chamber and then fireform them to fit the chamber. In the middle steps, it doesn't matter if the case looks funny and is stepped, the fireforming will work that out.
Mike

Last edited by Der Ami; 08/25/25 10:07 AM.