Most people have trouble mounting scopes.
1. Mount the rear scope base ring on the rifle first. Just the bottom half. Make it tight
2. Mount the front bottom half of the scope ring next. Use the scope to align the fit to your eve. Do not mount the top of the scope rings in this step.
3. with the scope adjusted to your eye mount the top of the scope rings but not real tight just snug. Look through the scope to make sure the cross-hairs are aligned with the barrel.
4. with an Allen wrench or screwdriver tighten down the rings using a crossover pattern. (left rear screw. front right screw. right rear screw. left front screw) a little at a time until tight. ) Now do the same to the other scope ring. Do not over tighten and strip out the screw holes.
5. most people try to put the rings on the scope first then try to put in on the rifle. This never works it will always come loose. The scope ring bases have to be mounted on the rifle first, then the scope comes last.
your next step is aligning the scope to your target but you didn't ask about that so I'll leave that for another question
Yes. But it requires a special scope mount from Crosman. ( Crosman owns Benjamin and Sheridan ) ( see the link below )
I am not familiar with this particular model (427) but I am familiar with Benjamin air rifle. If your problem is that there is on Scope rail to mount your scope then I know how to fix it. Crosman airguns owns Benjamin air guns. Crosman offers a special Benjamin barrel clamp that lets you mount a scope to it. See the link below
See the CROSMAN Link below.
See the link below for the Owners Manual for the Crosman 1077 air rifle
Crosman no longer has parts for this rifle. However there are independent shops that repair older Crosman air guns. Crosman offers a free service to locate these shops. see the link below.
The model 760B has a scope rail built in. I am not sure about the older 760's, there were 9 older versions made. I would not go crazy and purchase an expensive scope for it considering the rifle only cost around $30, but yes it is scopeable. Crosman make a scope that fits the 760 and is not expensive. see the link below
Crosman does. see the link below for the parts list and how to contact Crosman.
See the Crosman link below.
In 1977 The Benjamin Rifle company purchased Sheridan air gun company. In 1992 Crosman purchased Benjamin. So now Crosman owns both Benjamin and Sheridan.
Crosman still has parts for this rifle. contact Crosman at the link below (Customer service) and order the parts you need.
Only if the scope is designed for an air rifle. Because of the recoil being different on an air rifle than a firearms rifle. Air rifle scopes are made differently than firearms scopes. A firearms scope can break it's glass mounts if it is used on an air rifle.
Crosman started making the Raven's in 2008.