For my gun that is not enough. I needs some REAL FOWLING. There has to be burnt powder residue in the bore for it to shoot where I want it to. I have experienced this in the past, but have never really put it on paper. Even before target practicing, I would load 50 grains of RS and a round ball and shoot that off to be sure there is enough fowling in the bore. Now it is just a habit for me to do so, but I wanted to be sure that it was needed before hunting season came around.

skeetabop - what I would suggest (and what I am going to do) is fowl the bore with a light load with a round ball a day or two before your hunt. Then put your hunting load on top. I have left my charge in the barrel for a few days, just to check and have not lost my POI, which leads me to believe I didn't lose any power either. After you are done hunting for the weekend, shoot the load, clean the barrel, and then do the same thing before you go out next time. In my case, I will be doing that mid-hunt, as I will be out for 9 days straight, so I will leave the load in for a couple of days, then shootit off, clean the gun, fowl the barrel, and restart. I will most likely do this in the afternoon sometime while at camp.