p.p.s Why recharge time of the Sharps rifle slower than any other rifle?
Spoiler
It was a single shot percussion lock breech loader that could be fired eight to ten times per minute (three times the rate of the Springfield rifle)
This was done to make it balanced in comparison to the other rifles I believe. The Sharps is very accurate and if it had a faster reload speed, then it would be OP.
This
then what is the point to strive for realism in the game? but what about the bleeding?
IF you strive for realism, war of rights to go to. This game as Hinkel stated were made mainly for line battles, more like arcade style. Bleeding was made to make the line battles faster, so people wouldn't camp as much with the bleeding, and to make some new features.