Felt wads are especially effective for conicals and high powder charges. Or if using Triple 7 felt wads will settle groups because of the way Triple 7 ignites and cuts by certain conicals. Helps keep gas from cutting by the edges of the bullet and reducing accuracy. They are not for round balls. I don't recommend plastic wads, especially for round balls. Bad business. Have you tried pre-treated patches from Ox-Yoke or T/C. That might help with burn through. But remember, a patch can stand a lot of damage and still deliver good accuracy without damage to your gun. If you have a nice circular burn pattern on your patch and it is only burned a bit in the center there is nothing wrong with that. Now if the patch is flying all to pieces, that is another story and you need to back off on your powder charge.