Once you are positive all the variables are the same on this gun, as compared to your others, with the exception of being butt heavier, a slight change in your shooing style may help tremendously. It did for me.
When I introduced a Fox A Grade 16 to my "stable" I struggled with it on doves, at first. Realizing the huge difference in the handling characteristics of it as compared with my clays guns I decided to try something different with it. Instead of mounting, tracking the dove, and shooting when it looked right, I tried tracking the bird with the muzzles as I mounted the gun, then firing almost as soon as the gun hit my shoulder. Worked like a charm. Last shoot with it in the early season here (last Saturday of Sept. '19) resulted in a 15 dove limit with 22 shells. Some were very long shots.
Don't be afraid to try things like that before giving up on the gun. Figuring that kind of stuff out is fun and does wonders for your self confidence in the field.
Best, SRH
