Today I was out siting my scope in for my mossberg 835 . I have a fully rifled barrel on it. I started shooting Brennekes to sight my scope in since they are cheap slugs. Once I got it sighted in I shot some leftover remington sluggers. I had bought a case of Remingtons new copper sabot slugs. I decided just to shoot one of these since they were so expensive. I figured I would use these for the coming deer season. I shot one and completley missed the target ( I was shooting a trash barrel with a target on it at 75 yards. ) So i figured I f'd something up so i reloaded one shot again and completley missed the target. At this point I stopped figured I maybe had wrong ammo. It was ammo for a fully rifled 12 gauge barrel which is what I have. Why would this shoot so completley different?