777 is awful in my sidekick. The crud ring that forms in my gun after one shot will cause my rod and patch to jam in the barrel when trying to pull it back out. App loose powder has been reliable. The website and packaging state clearly that it will absorb moisture if left in the gun overnight. Cleaning after shooting app shockeys gold formula, is the easiest i have seen. Hell, I can clean my barrel spotless with a couple of spit patches followed by a couple dry ones.This is my own personal experience, obviously your results may vary. most times at the range I don't even swab between shots, as the bullets start easier than when I do. I plan on ordering some of the black mag'3 powder when I am finished with this pound of app. I also have the 25 acp conversion breech plug from prbullets.com. The only real improvement that this new plug brings for me is that the receiver of my gun stays very clean when I use the 25acp plug. 209's really blow crud back into the action of the rifle. It saves me a good 15 mins of cleaning time at the end of the day.