George, Can you list all the markings, exactly as they appear and where they appear. Remove the stock,also and check under there as well. Give a complete physical discription. Perhaps then someone can make an ID. The name "Bearcat" is currently a name used by Ruger on a single action .22 revolver. You may be able to acertain this rifles origins from a search by www.bluebookinc.com. The fact that it is chambered for the .22 short,long and long rifle narrows it down a bit,but not much. The short was introduced in 1857, the long in 1871 and the long rifle in 1887, Bolt action rifles came along a little later than that. Chances are that this is a "hardware" gun made up for Century Arms(a name currently used by a company in Vermont/Florida) with their name stamped on it. Many companies, including current ones have done this for years. Some names may only have a few examples ever marketed and the history is long gone.