Queball: If you examine the three patches stumpy has shown here, the thinnest one shows a lot of soot, which represents a patch allowing a lot of blow-by of gases. The middle one looks so good it could be used again. No burns, no soot. The largest, the .018 shows the kind of burning and stretch marks yours show. That may even be a small tear or hole we see on the right side,center, and upper right, at 1-2 o'clock. I am guessing its not a hole, but rather a separation of the cloth because it is too tight for the bore.
Now look at the patches that Roundball has shown above. They look much more like the .015" patch in the middle of the three Stumpy shows, than the other two. AND, Roundball tells us he is using 80grs. of FFg, and a prelubed patch that is .015" thick in that .62 cal. rifle. No question that those patches could be used again, if Roundball needed to do so.
My thanks to Stumpy and Roundball, and to Cueball. With the various pictures, it is easy to point out and see the differences different patch thicknesses make in one gun, and to show new shooters what their patches should look like after they have been fired. I don't recall seeing this good a set of pictures in any book on Muzzleloaders anywhere else.