Take it back out to the range and shoot some more at 100 yards. Take note of where the first shot hits - that would be comparable to a hunting shot.

Take the bore butter completely out and apply a light coating of a quality gun oil such as BreakFree CLP. Stow the bore butter permanently. Be sure to swab out the oil before firing again - couple of alcohol patches/couple of dry patches. No oil or lube between shots - only after a thorough cleaning.