Sure can't tell over the internet without a lot more information. The model name or number is PROBABLY marked on the barrel or receiver. If it isn't there I might be able to help if you describe the gun and tell everything that is marked. Or you can look for it in The Standard Catalog of Firearms.
Serial number
Can't answer about "Volunteer" question. Please tell which model. Volunteer is not a model by Browning
It is impossible to tell the make and model from just a serial number.
your model 12 Winchester shotgun was made in 1924.
It should be stamped on the side of the receiver.
You need to provide the maker's name.
Bluegrass 12 gauge shot gun model 1900
your model 12 Winchester shotgun was made in 1959.
your Winchester model 12 shotgun was made in 1953.
the make of the shotgun is Daiwa model 500 it's a 12 gauge
Your winchester model 12 shotgun was made by winchester in 1937.
model 620-a