Read the owner's manual or have a gunsmith do it.
Standard 16 gauge shotgun shells.
You can request an owner's manual for free at the Remington website.
Get a copy of the Gun Digest Shotgun Assembly/Disassembly manual. It should have the Mod 67.
Go to Browning.com and you can download a manual.
You can get the manual from this page with some basic info. http://www.winchesterguns.com/services/index.asp
Take it to a qualified gunsmith
Take it to a gunsmith.
How many cartridge does a 12 gauge shotgun carry.
Not quite sure which model you have. Use the link below to find the owners manual for your gun. Follow the manual for dissassembly.
Which one?
Take it to a gun smith.
You take it to a gunsmith