Stats goes completely against the idea of a skill-based melee system, it's just not a good idea really.
And muskets don't need to be more accurate, in case you didn't know muskets are smoothbore firearms, this means that there is no rifling in the barrel (Grooves cut on the inside of the barrel to spin the bullet, making it more accurate) and on top of that the bullet is smaller than the barrel because there was no way of precisely measuring caliber back then so it's better to have a bullet that is smaller than the barrel rather than larger than it, otherwise it would not fit (duh

) And a musket ball was very likely to drop given that it did not have rifling and it was not shaped, it was a broad round ball and it was quite heavy as well