For what its worth, in my 24 inch barrel in my Knight Disc, I never shoot more then 120 grains of 2f, but I have no chronograph to see if it is doing good or bad. I go by group size.

As for your swabbing, I commend you on being so careful. Personally I only go to that extreme when changing to a new bullet. But then I can understand why you do that.

That one group looks darn good...