In a fit of nostalgia I bought a Charter Arms .44 Special Bull Dog. Haven't had a .44 Special for 25 years. Digging deeply, I recovered some .44 S ammo, including some I quit using because it is, I recall, "armor piercing". I tried to research the prohibition and failed to find clear guidance. When I packed it away, I was afraid using it could make me a criminal. Will you please re-inform me as to the federal law and tell whether any successful prosecutions have been made of citizens using it for self defense? I do not think my state, Texas, has a law addressing this. Thank you for all you do for us!