Stevens was founded in 1864 in Chicopee Falls, Massachusetts. Savage in Utica, New York, in 1894. Savage purchased the Stevens plant and name in 1920 and continued to make guns with the Stevens name...
http://www.savagearms.com/10predator_snow.htm
Utica, NY
You might find a video on youtube, I usually get a lot of info from there. Type in gunsmith or the name of your gun.
Follow the instructions in the owner's manual. If you don't have one, check the local gun shops, gun shows.