I go to Joann's after Christmas and buy the Christmas print flannel that is marked down. I don't worry about cleaning patches being 100% cotton as you can see many others don't either and I sure don't worry about the thickness.
Unfortunately TC'S barrels are rifled for a maxi ball. When you are raising the powder charge with a PRB chances are it is skipping on the rifling. After years of 5 shot groups with 4 in the bull and one in the 5 ring I figured this out.
In the don't discuss modern style guns on this forum. If you are using pellets did you put them in with the ignitor pad down. I thought one of the alleged big advantages of these things was it was so easy to p I ll the breach plug.