I can tell you this, the same shell through my X-2 and a 690 rhino will put 300+ every shot in a 10 at 40. I crushed 4 gobblers last year with the 3.5 shells, and 7 with the 3" #7's. The ranges were from 13 out to 44 yds. The #7 are the real deal. Sounds like you just need some fine tuning, keep at it...