Hi, I found this the other day, how old is this, I measured and this is close to 5/16th's of an inch, I would assume that is about a 32 cal, though I have no idea, kinda out of my field, does have some vertical marks
Thanks for the help, I was afraid that might be, somebody over the weekend told me that, the reason I asked, was I did find a single ring Colt 44 minie ball not far away, just trying to be on the safe side