I find in almost all my rifles.. they shoot better fowled. I think, once the bore is fowled and then swabbed, the following shots should be as similar as the one before. The more consistant each shot is to the prior one, the better the accuracy.

The problem is when hunting, if you fowl the bore to hunt, you also start the clock as to when that rifle needs to be cleaned next. But to me again, that's not a problem as I discharge all my rifles at the end of the day, clean the rifle and start new the next day.