Bill H;what are you using for cases? Years back we made them out of Win 30/30,lot of hassle to cut rims,extactor grooves,length and then blow case out.Then years ago when the 7.62x39 Russianguns and ammo started to show up in the U.S. I latched on to all the empty cases I could find,they are perfect for the .401WSL.
Cases left to right, 30/30,7.62x39 mm Russian,7.62x39 case formed out,Factory .401 case and a 7.62x39 formed & loaded as a .401 WSL. I designed and made a die/tool that forms the 7.62x39 Russin case into a .401 WSL case in one simple step,if anybody wants the procedure I will post instructions,pics and etc.
RayP.