I recently purchased a Charles Daly Pump 12 Gauge Shotgun. It says 3" Field on the barrel. Examining the barrel it's not rifled (no spiraling) and appears to be smooth (smooth bore?). I'm trying to figure out what type of shotgun shell to purchase for it. I assume 3", but not sure what type. I only several pistols and ARs, but this is my first and only shotgun. Any help would be greatly appreciated.
Thanks In Advance,