I take it you need to hunt with a shotgun where you live and rifles are not allowed...Are muzzleloaders allowed? If they were, in that case I would leave the turkey barrel right where it was and pick me up a inexpensive inlinemuzzleloader. Most of the new inlines are legal in most shotgun areas, they also give you the option of muzzleloader season, and you get one shot and make it count. They have more range then most shotguns, especially scoped. Some of the entry level muzzleloaders are under $100.00 and will shoot just fine.

If they are not legal then I would get a barrel where I could leave the scope attached and just change barrels...

My friend in the southern end of the State hunts shotgun only areas.. and he was complaining about always being just out of range for the big deer that cross the marsh. He was loaned a scoped inline rifles the first year and he dropped a dandy eightpointer with it. Since that time he has purchased his own since a muzzleloader is legal in a shotgun zone.