[Tupelo]

Since they only have the bullet(s), I kinda doubt they know if it was fired from a firearm chambered for any of the cartridges you mentioned. I suspect at 7.62X39.
but it is fun to watch the speculation. Especially speculation coming from uninformed “journalist”.

[rickomatic]

I’d be willing to bet that the suspect weapon came to Sh*tcago via Eric Holder’s Fast and Furious “arm a criminal” program.