I now have 2 frames and 5 barrels. Long barrels include the 12 guage, .270 and 209X50. Pistol barrels include the .44 mag and the .223.
I am at the stage where I don't mind changing barrels or stocks/grips but want to have everything scoped and sighted so the change makes it ready to go. So, with my theory, buying a barrel needs to also include the purchase of a new scope.
Hope this helps.
Mike