I suggest you try the link below. Or search the web for "Air gun repair."
Nobel model 20 is the same gun for parts.
See the link below for the parts list and phone number for Crosman.
Let my examine your question. I think you mean Pellet rifle not Pellet gun. The Hy Score model 806 is the same model as the Winchester 422 and the Diana model 22. Unfortunately you did not give me any information about the condition of the rifle itself. Is it in {POOR, FAIR, GOOD, VERY GOOD or EXCELLENT Condition. You have to give me some sort of rating before I can give you an estimate of value. Tell me about the condition of the rifle. Does it still shoot?
I would try the internet, gun shops, gun shows, sporting goods stores, want ads.
It depends on the model and the caliber of the Pellet gun.
I think you mean pellet gun. That is a gun that fires a small lead pellet but does not use gun powder. It uses compressed air or compressed gasses to push the pellet.
A pellet gun is not adequate for protection, and will get you arrested.
It all depends on the model and who made the pellet gun. I suggest that you re-post the queston with the model and make of the pellet gun to get an answer.
Any pellet gun should be handled like a real firearm. Yes you can be killed with a pellet gun under the right circumstances.
Your best bet would be estate sales, auctions, want ads, gun shops, gun shows.
No. Even if it would fit in the chamber, there is no firing pin on a pellet gun.
Nope. Pellet guns are fairly safe to use.