Well, I' m not sure how that could be, but I know it works. It' s an escellent load. I killed geese with it at Unbelievable yardage. The one was so far, I pulled the range finder out.....73 yards! (Improved cylinder shoke!)

I patterned it on paper for turkey ans was shocked on how well it grouped with a super full choke.

That' s the only shot I will use when I go goose or turkey hunting.