I heard recently that black powder weapons sometimes were deliberately loaded with extra powder for their first shot, allowing greater range. The idea was that pre-loading before battle allowed more shot and more accurate loading which meant the first bullets traveled further and probably hit harder.

Overloaded Powder: Increase range by 25%, change damage to +2, and add the Dangerous trait. Weapons which already have the dangerous trait now also critically fail on 96-00, and any critical hit.

Seems fair and crazy.