#1) No, there is no difference in accuracy, but the Omega is an inline too

#3) With any of the Blackpowder substitutes, I have always just reloaded and just hunted for 3-4 days without cleaning. If I decide to clean due to moisture conditions (rain, etc) I just fire it into the ground and then clean and reload it that night in camp. If I were using real black powder, I would probably shoot it and clean it each night.

However, with BH 209, I have hunted in wet conditions for up to a week without reloading or cleaning.