Choke Tube problem

[buckskin]

http://img28.photobucket.com/albums/v85/davidhamenstafer/DSC01192.jpg

This is the choke tube i tried this year and the
instructions said it would cut down on recoil.
Well it did that but the shot was so bad that
the shot colomb went only 15yds.and the shot
didn't reach out to 25yds the bird was at 30yds
and i have taken a bird at 35yds before.I did't
get a chance to test the tube out.any info would
be helpfull. thanks buckskin

 

[SJ]

The best info I can give you is never go hunting without patterning your gun set up before you do. I have no clue why it shot so bad but I would be getting some different chokes and loads and trying them out on the gun your going to hunt with.