Well not willing to give up, I took the new jug out today and shot it in the Knight Disc and the Black Diamond XR and a Renegade with a Stainless Steel GMB on it. The American Pioneer Powder did not let me down, it shot all over the place. I tried soft seating pressure, moderate seating pressure, and he man seating pressure. All to no avail. I was shooting at 100 yards and the APP shot about a 5 inch group. Actually that's not quite accurate... two rounds I could not find. I was shooting at a corner bulls eye with the Disc and the Black Diamond.
The strange thing is it would lay two in the bull and then throw one way out of bounds. I even tried swabbing and that only made it worse I think....
To make sure it was the powder and not the rifle I broke out my final supply of Pyrodex Pellets..

I figured these things have been around the house too long, and needed to be sent down range. The Knight with the same shockwave as the APP and the same load (two pellets or 100 grains) (although I shot a couple three pellet loads just to get kicked around). It shot a 2" group with the Knight and the Black Diamond shot just over a 2" group as I had a flyer.
With the open sights and the Renegade with the Stainless Steel Barrel I was shooting 85 grains of APP 3f and 200 grain 10mm XTP's. Actually it did better I thought in the Renegade then the other rifles. The trouble is I had two misfires and a nasty (dangerous actually) hangfire that only went down range because I failed to move off the bag.
I think I will try this APP 3f in my smoothbore next with birdshot.. accuracy there is not all that critical since I intend to spray the woods.. should do real well there...