No we don't have the same gun, every gun is different. Have you polished your barrel yet? Go over to the NWTF webpage and get into the forums....Shotguns and shotgunning search for polishing the barrel on an 835. And if you were shooting just the winchester supreme turkey loads than yeah there is a big difference. Try the winchester supreme elite hi density. I wouldn't waste your time on the federals with flight control with your ported choke. What choke did you buy? If I here to go buy a choke it would be a Kick's or a comp n Choke 680. Are you shooting from a solid rest like a picnic table? I shoot from a table with sand bags under my gun to keep it steady. I hope you get it lined out.