i dont know. i think it is
It is a shotgun shell.
3 shot (1 in chamber & 2 in the tube)
I do not believe that Winchester ever made a 9mm shotgun, although 9mm "snakeshot" ammo, comprised of tiny pellets and looking lot a shotgun shell exists. Do you perhaps mean 9 guage?
Yes as long as you get one made for the Winchester model 1300 and chambered for the same length of shotgun shell that the receiver is chambered for.
No way to answer without more information such as type of crimp, paper color, markings on paper and head and base.
pocket.
They never did. Winchester makes a paper shell and they all still make brass shells.
This for firearm saftey or somethin..... K the parts of a shotgun shell are the gunpowder primer casing and the bbs or slug
the shotgun takes a 2 3/4 shell
hull
Where the shell is loaded.
I know very little about model 12's but I do have a 16 guage with a 24" barrel chambered for 2 9/16 old paper shell.