I am having difficulty sighting in my 50 caliber in line muzzleloader. I have a Nikon BDC scope that reccomends a 250 grain bullet with three pellets. The scope should work right with this set up. I bought some 245 grain sabbots after searching unsuccessfully for 250 grain sabbots. I set my target at 100 yards, using a ledsled, I cannot group anything. I'm allover the target 6-8 inches apart, with no pattern. I clean the barrel after every shot Anybody got any ideas?