RE: black powder
Trust me Brother don't do it.
I have a means that works very well. However here are the problems.
It is illegal in many states
Black Powder will corrode you electronics
You have no way of knowing just when (not if) your barrel will come apart at about 1000 FPS
Loading is a pain and dangerous.
To much strain on the plastic parts of the turret
Muzzle Brakes fly really really far
It is not that realistic
Don