Any experience out there for my ? on Rem. ext. rifled choke tube? Rem. slugger box says can use in rifled barrels or w/rifled choke tubes. My experience with them and with sabot slugs in my Rem 11-87 is not very consistent for accuracy out to 80 yds. Maybe this topic has gotten treatment in this forum before so I may need a reference as a relative newbie. Thankx