Thanks guys for the good information and correcting my misconception regarding the recoil of the rifles.
Now I have a question.
Since those rifles were made with Black Powder in mind, would it be unsafe, or not advisable to use Smokeless Powder in them instead? No one likes turning their guns into a bomb! lol
Powder..patch..ball FIRE!
NEVER NEVER NEVER NEVER NEVER NEVER NEVER NEVER put smokeless powder in a blackpowder specific weapon.
NEVER NEVER NEVER Even small amounts of smokeless powder in a blackpowder weapon is dangerous and can be fatal.