I know that loaded long guns are not allowed in (or on) vehicles. Specifically:
"Loaded firearm or crossbow" means a firearm with a cartridge or shell in the chamber or in an attached magazine, clip or cylinder or a muzzle-loading firearm charged with powder, lead and a primed ignition device or mechanism or a cocked and armed crossbow.
What if I have a shotgun with nothing in the chamber or mag tube, but I have a shell holder attached to the side of the gun with rounds in it?
"Loaded firearm or crossbow" means a firearm with a cartridge or shell in the chamber or in an attached magazine, clip or cylinder or a muzzle-loading firearm charged with powder, lead and a primed ignition device or mechanism or a cocked and armed crossbow.
What if I have a shotgun with nothing in the chamber or mag tube, but I have a shell holder attached to the side of the gun with rounds in it?