Just incase you were wondering, even if you kept the scope on(I doubt you can, during a swap) your point of impact would change going from one cartridge/barrel to a new cartridge/barrel. Someone with more experience may be able to chime in. But it would be considered almost necessary to sight in the rifle again after swap. There has been some discussion about the change of the point of impact and whether or not barrels can be swapped without removal of the scope in the past.

Good luck and have fun! welcome to the site!