I would say a Mod. tube. I personally shoot a Patternmaster tube in my Super Black Eagle. It is so tight that if it hits them there dead, no wounded birds. But if you are off on your aim that slightest bit your gonna miss um. I found that if the birds are decoying put the bead right on the face and you got them but if they are flying passed you put the bead about an inch in front of there nose and you got him.