My 870 with those shells and a Remington super full (.572) was smoking at 20 yards. Like basketball tight pattern. I know this is a different gun and choke but I've read good stuff on the sumtoy 562. Wondering if the choke is too tight.
Yes I cleaned the barrel really good before I shot it. I ahot one dove load to check my impact then one at 20 yds and I think 3 more at 40 yards bringing my sights up