i found the age out myself , it was built in 1894, first year COOL!
but I'm still not sure on the ammo.
I see no Winchester Model 550-1 in the Standard Catalog of Firearms or Modern Guns. Check you source for the correct model number.
Your question has used the serial number of your Winchester,not the Model number.Please include a description of your Winchester along with the model number,and the serial number to get a answer about your Winchester.
30 WCF (Winchester Centerfire) is the same as 30-30 available at any gun store.
According to OldGuns.net, the year of manufacture for serial number 4873998 is 1980. Such a modern gun will not have much collector's value.
The phone number of the Winchester Public Library is: 217-742-3150.
The phone number of the Winchester-Frederick County is: 540-667-3242.
With the serial number that you provided your winchester model 1897 shotgun was made by winchester in 1913.
Your winchester model 1894 rifle was made by winchester in 1973 with the serial number that you provided.
Your winchester model 9422 was made by winchester in 1975 with the serial number that you provided.
The phone number of the Winchester Historical Society is: 603-239-7399.
The phone number of the Prairie-River District - Winchester is: 208-924-5164.
The phone number of the Winchester Community Public Library is: 765-584-4824.