Hi Fat. I sure like all your arrowhead/flint stuff. Your brass is a .44 Henry rimfire. Used in Henry rifles and also Winchester M-1866. The Henry rifle and the Win. 66 had dual firing pins so it was fired in one of those two rifles. Gary
Thanks for that compliment, this is a really fun site, wide variety and lots of knowledge. You give really good explanations and I haven’t memorized your stuff but give me a little time.