I don't know a heck of a lot about loading ball or rifle ammunition, and only a little more about loading shotgun ammunition, but wouldn't a paper patch make academic a difference of a couple of thous in the ball?

Also, AFAIK, the accuracy of your round ball load will drop off as velocity increases, because a non-spinning ball will knuckle unpredictably, just like something thrown by Rick Wakefield or RA Dickey.

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