I just acquired a 1950's Gallyon 12ga. So if this post is in the wrong forum please move it elsewhere or remove it. I am new to shotgun ownership and especially to the SXS community. I just wondered what kind of shot I need to be looking for for such a weapon. It is marked 2 1/2" nitro proof 1 1/8. Thank you in advance for any and all help. Any suggestions in a good source of such ammo would be greatly appreciated also.

Gary