My son owns a MDM Quikshooter which looks like it came off the same assembly line as an NEF. His rifle loves Pyrodex and he proved it again this weekend up at camp. 2 or 3 of the 50g pellets or 120g loose RS and he was tearing up the joint with his rifle.

He was stuffing anything down the bore as well I was feeding him old mag express sabots with 300g Nosler bullets and he hit as good as with the 250g shockwaves. Granted we were only shooting 50yds but that gun was shooting mighty fine. He has some bonded shockwaves and Triple Se7en but he did not want to shoot them. He has the scope dialed in with a 120g load of that stuff for hunting season.