Hey guys need some help, I have a Charles Daly 20 gauge semi-auto with a 26 inch barrel that I'm trying to pattern for a turkey gun. What choke tube would be the best for this gun using the federal heavy weight #7 shot. I've tried the Tru-glo strut stopper extreme but it don't shoot no where near as good as my 870 did with this choke, I don't want to spend a bucket full of money on choke tubes to see what it shoots the best, thanks