Hi guys, I'm Mike Ford. I finally registered so I could reply directly and not just scream at the computer screen. All that is necessary is to size the case(maybe cartridge) enough to chamber,one time.Then it can be loaded easily with common dies. I wouldn't recommend someone else work on live ammo(for obvious legal reasons),but I would try it first,myself.I tried a live S&B(older berdan primed)round in my 38-55 sizing die, with decaper/expander removed. The bullet clears the neck,and it looks like the lower body might be sized enough to chamber in your rifle. If not,then you are no worse off.BTW if you have to thin the rim,using a spiggot as recommended by Kiwi is one way. Another is to use a 38-55 die,turned into a 7/8 14 threading die and chucked into the lathe.Insert the case into the die and push it with the tailstock. It won't go all the way in, giving you room to reach the front of the rim.Putting a radius on the front edge of the rim may be enough,depending on the space between the barrels and breech face.I wouldn't be afraid to thin it from the rear,and use pistol primers.Older drillings sometimes have trouble igniting large rifle primers anyway. Rechambering to the "N" chamber is the one rechambering job I support,for people that either can't or don't want to handload.After all, as Axel said, that is the purpose of the "N" chamber.You would be surprised at how little metal is removed.Whatever markings are on the barrel would still be correct.On the other hand,I can understand anyone enjoying loading for unsual calibers. Do I have everyone confused enough yet? If not I can talk about making a simple die to size the cases to chamber for fireforming.
Mike
