okay, I tested my double barrel slug gun with several slug types. The best groups came from Fiocchi 1oz aero slug and a 1 and 3/8 inch Brenneke black magic magnum.
Both slugs shot clover leafs at 50 yards!!! Consistent accuracy. In that category the gun works very well.
The problem is: The right barrel impacts 4 inches low and 4 inches to the LEFT of aim. The left barrel impacts about 5 inches low and 4 inches to the RIGHT of point of aim.
So BOTH barrels are shooting low and both barrels fling shots to the opposite side of point-of-aim.
At 25 yards the "problems" are just about exactly HALF the distances described for 50 yards. The right barrel shoots LEFT and left barrel shoots RIGHT, even at only 25 yards!