Oldtimr

The question is, how long before states that require shotgun only decide that a gun that for all intent and purpose is more rifle than shotgun is not going to be legal in shotgun only areas or shotgun only states. When a brass case is loaded with a single projectile and is loaded into a firearm with a rifled barrel, and that brass casing (cartridge) was made for that specific firearm, is that firearm still a shotgun or is it a rifle? I believe the case can easily be made that it is a rifle doing what a rifle was meant to do, and that is to fire bullets, not shot. I suspect if this comes to the attention of shotgun only states or states with shotgun only areas, they will call it a rifle.