Ok I am looking to get into Hunting, and I was looking at Turkey season. I have a Mossberg 590 Retrograde 18.5" Barrel pump action shotgun, and I was wondering if this would be ok to hunt with? One of my co-workers said that the barrel is too short and to get an actual Turkey Shotgun. However at my hunter safety course I talked with the instructor and he said that what I had would be fine just as long as I get the right Turkey shotgun shells and practice a lot on the range. So I ask the hunters here on this board, what your thoughts were, do I need a Turkey Shotgun or is my shotgun that I have sufficient?