I was considering a 40-70SS rifle from C. Sharps and was told they can cut the chamber and head space for either the 405 Winchester brass or BACO 30-40 Krag. Is there any advantage of one over the other? I've looked at my usual 5-6 sources for 405 brass and it's not to be had and some indicated no back orders. I do have 100 new cases of BACO(30-40 Krag) brass for the C.Sharps rifle but if the 405 is better I can always sell the other. There seems to be a problem finding either.