If it indicates that it will accept a 3 inch shell, it is a magnum. If it is marked 2 3/4 inches, it is not. Unmarked- not.
.357 Magnum. You can tell just by the recoil of the firearm.
PROBABLY 6.5 Carcano, but you should have it examined by a gunsmith to tell for sure.
You will have to tell who made it.
There is no way we can tell from this end. You will need to have the rifle examined by a gunsmith.
By looking in the chamber.
No one Mossberg shotgun. Tell us what you have, we may be able to answer.
You can find information right here on WikiAnswers. You have a Magnum 12 ga shotgun made in 1969. Ask your questions, and we will try to assist. If we can't provide what you need we should be able to tell you how and where to get it.
It will be marked on the receiver. It was made in 1980
I have a baker shotgun serial number is 6045. Can anyone tell me the age
can you tell me please what this 32 in shotgun is is it worth a lot of money
A combination of serial number, features
look in your owners manual and it will tell you.