When the balls are undersized for the bore, you get lots of gas cutting, as evidenced by blow and cut, and burned up patches. When its oversized, you have to really hammer the ball down, and that tends to cut holes in the patching too, as well as distort the shape of the ball. Since no two balls are the same size, they can't be the same weight. That means they will strike at different points on the target, or go sailing off into the air, as you have witnessed first hand. Now you know how what happened to you did happen, you can take the advice given above to sort your balls by diameter, using either a caliper, or micrometer, and then weight the balls on a powder scale and sort them by weight. Then make a final look at the balls and sort out the ones with wrinkles, leaving the smoothest, consistent weight, and consistent diameter balls for serious work, and the rest for plinking or for throwing back in the pot to be re cast!
