so i posted this on another forum and so far nobody has been able to help, we have narrowed it down that it is not a us manufactured cartridge. i am trying to find out what this cartridge is, what the age is, then hopefully figure out a value for it. thanks in advance, nothing bothers me more than having something and not know what it is, im one of those types of people lol.
measurements in inches
bullet diameter- 0.299 or 0.298
case diameter- 0.343
case length(from bottom of rim to top of the case)- 0.761
overall length(bottom of rim to top of projectile)- 1.185
total weight of the case is 58 grains. the whole cartridge sticks to a magnet.
here are some pictures(the other cartridge pictured is obviously a .22lr for comparison)