There are three different versions of the 766 but all three load the same. All load through the oval trap door on the pistol grip. See the link below for the Owners Manual
Crosman offers a service to locate repair shops that repair older Crosman air rifles. See the link below
see the link below for the owners manual
Crosman has most all their BB gun/rifle manuals online. (See link below) on the Crosman home page click on the "Download a manual" at the bottom of the web page and locate your manual.
in the scope its a slide on the top put the scope on the gun aligned with the hole in the gun and scope then pour bbs into the scope
You follow the link below to the Crosman website Customer Service section, download the manual for the 140, and read it.
If you are asking about a Crosman Model 760, I suggest you go to the Crosman home page and click on "Download an Owners manual". Crosman still offers the manual on the rifle and not only will you see how to load it but you will also learn other features about the rifle.
Go to the CROSMAN homepage and click on "find a repair center" it will help you find a repair center that handles your rifle See the related link.
The Crosman 120 is a rifle not a gun. It is a break barrel. Cock the barrel all the way down and load a pellet into the rear of the barrel. Pull the barrel back up and it' is ready to fire.
Crosman offers a service to locate air gun repair shops that service older Crosman air guns. See the link below.
Crosman doesn't make the Grizzly, Daisy does. $40
Gun shows, gun shops, want ads.