The Super Black Eagle 3 (10379 ) is a black synthetic with a rifled barrel. When doing a pellet count on a SBE 3 you would see a very evenly distributed pellet count with 60% high and 40% lower of your Point Of Aim. Every SBE 3 from the performance shop comes with actual pellet count patterns.
If you could give me a day or two I can set up a SBE 3 with Optics and laser sight, to confirm POA shooting slugs, knowing your ammo, yardages, drops are more than like going to be much bigger factors than true POA on a this shotgun.
I have worked on several M2 slug guns 20 gauges that shoot extremely well out to 140 yards, POA was centered.
SBE 3 owners and 828U owners who report "Shooting High" are not fitted for the shotgun, I have fit several 828U owners who SENSE the barrel coming up high then need adjustments using the Benelli fitting system which is quite comprehensive on a 828U.
Please remember the very first SBE 1's imported by H&K could be ordered with a High or Low rib, most shotgun owners do not even know there guns shoot a 60% high pattern, the gun is designed for these results.