I agree with eldequello...I cast mine out of a Rapine bag mold and they shoot better than I can hold...It does not matter if they are not perfectly round anyway because by the time you load them down the bore and shoot them, they will conform to the bore size anyway...A properly patched ball, when pulled will have the weave from the patch embedded on it, no need to dimple to grip the patch...

After the shot, the ball flattens or squats (obrutrate???) is the word...It will be larger in diameter around the bore than parallel to the bore...

If you want more accuracy...Cast your own...I have seen improvement in shooting hand cast balls vs swaged...In my opinion the cast are softer and confirm to the bore easier...