I know this is just rambling on but I never ran into anything like this before. I know there are some people who just should not shoot firearms. I had a man that was going to buy the 2 boxes of 38/40 WCF. I have and said he has a 44/40 rifle, and thought it would be okay to shoot the 38/40 in his 44/40, and he would keep the brass as he is going to buy a 38/40. I would not sell them to him and he kind of got mad, but I told him if I sold them to him why not keep the loaded rounds till he got the 38/40 rifle, and he said there was not that much difference in the two rounds. I know he knows the difference but told him anyway about .401 other than .427 or .428 and I told him yes they would chamber and fire, but the bullet would key hole, and the neck would expand to much and the cases could and most likely would split. Well he told me what I could do with the ammo and left. This guy has bought guns from me before and kind of scares me. Very unlikely he would not be hurt but I still would not have sold him the ammo. Glad I am retired and only sell though dealers.
Reno