No it's not designed that way. Even a few pumps will produce enough power to do damage.
No- and it would be very dangerous to try. Pellet guns and airsoft are two very different things.
See the link below for the owners manual.
There are nine different versions of the 760 pumpmaster, see the link (below) and find your version. Check the parts manual for a diagram.
No the Pumpmaster has more power and can shoot BBs or Pellets
Definetly the pump master. It is a multi pump gun so the fps depends on the number of pumps.
See the link below.
I suggest you direct this question directly to Crosman Customer service. See the link below.
See the Crosman link below for the diagram.
PSI: It depends on how many times you pump the forearm. But Crosman says to never pump it more than 10 times. The 760 is rated at 625 FPS with a BB and 600 FPS with a pellet.
600 FPS - Pellet 625 FPS - BB
11 mm dovetail rail
There are 12 versions of the Crosman 760. Which one do you want.... See the link below