I would first try E-bay then I would check other site,s on the net under Charles daly.
Crosman has the original Owners manual online. The loading port in on top of the barrel. See the link below for the manual.
Looking for a owners manual on a western field 22 rivle.
Try contacting the maker.
depending on the rifle i would check ebay. or just google it.
No known web site.
what type of scope mounts do I need
See the link below for the Owners Manual.
If you are looking for the owners manual go to the Crosman home page and click on "download a manual" you will find the 500 owners manual there.
Do you not have an owner's manual? Have you tried an internet search on "rifle cleaning procedures"?
See the link below for the Owners Manual for the Crosman 1077 air rifle
You can download one from the Browning website.
Go here - www.remington.com/literature_request/literature_request_form.aspx