Hi all, I bought a benchrest rifle from my gun shop. It has 6x284 marked on the barrel. I could not get much history on the rifle. My question is, how can I tell what it's chambered for ? I really want to shoot it but I don't reload. I was hoping I could get some ammo made for it if I could find out what ammo it takes. Should I bring it to a gunsmith ? I am new to the 6mm field so I have no experience in this caliber. Any suggestions would help. Thanks . Semper if !