Where can you find an owner's manual for Model M822A 22 magnum?
We are going to have to assume you mean a Western Field M822A
rifle in .22 Magnum. These guns were made by Mossberg for Montomery
Wards and are basically the same as the Mossberg 640. That model is
obsolete, so perhaps you might try doing an internet search for
'Mossberg 640 Owner Manual' and see if somebody has a repro