My wifes grandfather recently gave me a box with some old ammo in it. Pretty cool full boxes of old Winchester and Remington shot gun shells. Coolest thing was a plastic baggy of old rimfire cartridges. The bullet diameter is 0.407. Tip of the bullet to the back of the case is .907 Headstamp is a "U". Looked it up and it looks to be a .41 short rimfire. 130 gr bullet alittle over 400fps. Apparently they are for an old derringer type pistol. Anyone more familiar with this than me?
"I would say my favorite gun is whatever is next to me with the most ammo." Ted Nugent