Can't be answered without knowing what it is choked.
being that your savage/stevens shotgun was made between 1933-1945,I would have a gunsmith check your shotgun to make sure it is safe to use and at that time question him on use of steel shot through your shotgun.
stevens model 620
Savage-Stevens, early-mid 40's through 50s
Contact Stevens Customer Service through their website
You may be able to find the information you are looking for through this web site: http://www.huntingsociety.org/gunstocks.html
Try your local gunsmith, rummaging through the bins at a gun show to see if you can find a match.
What type of action? Ranger usually means it was sold through the Montgomery Wards catalog.
Riverside was manufactured by Stevens, so if you can identify the equivalent Stevens model, you should be able to find hammers at http://www.e-gunparts.com/ Or if you still have one hammer (or a broken one) you can take it to a local gunshow and dig through bins of miscellaneous parts looking for a match.
Check with Savage Firearms customer service through their website. They own the Stevens brand.
Utility gun, probably made in Belgium between 1890 and 1914, or by Crescent, Davenport, or Stevens between 1915 and 1940, and sold through Shapleigh Hardware.
It is a easy voltage to obtain and can check for breakover in the insulation. The voltage is higher then what would be put through most wire and shows any weakness.
I have a revelaion model 300f as well. I do know that it was sold at Western Auto stores, but not sure about the dates it was manufactured in. The gun was manufactured by Stevens and sold through Western Auto stores. I have found that is the same as Stevens model #77C, but unfortunately that is all the information I have about it as of now. Hope this helps you out some.