I had no issues with shooting to 30 yards. I was hitting at 40, but when I set up my camera on the target, there was definitely a delay from hearing the shot to the bolt hitting the target so I would not shoot at game that far away.
I hadn't thought about the disabled folks.
Barnett Jackal, good price, but not top of the line. 150 pound draw, but I can still cock it w/o a device if needed.