Well hardly an intensive test. I got my barrel (209x50 Encore) back from getting two more holes tapped for a 6 hole base, mounted a Konus 1-4x25 30 MM scope on it and put the barrel on the action. I had ordered and received 4 pounds of the MPB from Grafs. I got it sighted in pretty fast but I noticed the scope sits too far back set as far forward as I can get it. A combination of the adjustment knobs being in the wrong place and the eyepiece being pretty long it hit me in the face 4 times. Not hard enough to make me bleed but a bump none the less. So I flinched a few shots. At any rate because of this I kept my charges down to two loads of 80 and 90 grains for testing. The powder puts out plenty of smoke if that is important to you. Fouling is minimal. I normally swab by running a wetted patch (this time with orange windshield washer fluid) turning it over and running it again then running a dry patch between shots. The first patch is dirty but the second is pretty clean. Accuracy and repeatability was very good when I wasn't flinching, I wasted three shots and I only fired 15. Cleanup was a breeze I ran both sides of a wet patch and a dry patch 3 times and the barrel looks spotless. The breech plug remained clear and I did check it at shot 11 and when I was finished. So now I have to find a scope that I can get the eyepiece far enough forward so it doesn't knock my shooting glasses off. I was shooting green ribbed Harvester sabots and 240 gr. Speer Unicor .429 bullets which loaded just right.