To accurately shoot a flintlock you must be able to hold the rifle through the ignition timing. I load 70 grains of 3F blackpowder with 7F in the pan. I can guarantee I have the fastest ignition time out there. Therefore it is easier to hold and shoot a flinter. I used to shoot alot of silhouette with my flinter, and visitors would always take a vial of 7F home with them. I would disagree with it not being necessary. In my opinion the more consistent the better. And I am sure you would have faster, and more uniform ignitionwith factory 7F instead of hand ground 2F. Tom.