you need to take shotgun out with a wide variety of ammo and pattern those rounds in your
shotgun.. If you talkin a HD set up. Barrel length 18" or 20" your talking Cyl or IC choke. Agian need to bring out a wide variety of 00 buck and patten your shotgun. Some will pattern like crap, Winchester Super X from Walmart is one of those. Along with that Mil-Spec garbage from Olin. Cut them apart and they are identical.
Best HD 00 buck, Fed Low Recoil 00 Buck with FLIGHT CONTROL. Perform best in CYL & IC
Mossberg 500 18'' barrel 7 shot 6+1