The .41 rimfire short is...shorter, at .913" in length. These are .990" long. A couple of these show signs of a extremely light strike at 12 and 6 o'clock. I think I read somewhere a Henry repeater had two firing pins for the .41 rimfire? I imagine someone started to use this box with a malfunctioning weapon,figured the cartridges were no good,and either gave them away/traded or put them aside and never touched them again (not to be trusted). Just a guess...