Rifles and shotguns, uncased...
First, I don't recommend it.
Second, I'd ask the owner if it's ok with them; but I still don't recommend it.
Third, if you want to do it despite my recommendations (hey, I'm just some guy on an internet forum), then I'd at least make sure the action is obviously open, and that the gun is held in an obvious, non-threatening manner, with proper muzzle control maintained at all times.
But it's much simpler to keep the long gun cased. Less possible alarm amongst bystanders and store staff.
First, I don't recommend it.
Second, I'd ask the owner if it's ok with them; but I still don't recommend it.
Third, if you want to do it despite my recommendations (hey, I'm just some guy on an internet forum), then I'd at least make sure the action is obviously open, and that the gun is held in an obvious, non-threatening manner, with proper muzzle control maintained at all times.
But it's much simpler to keep the long gun cased. Less possible alarm amongst bystanders and store staff.