Buy and set up another gun! Switch barrels are a myth or buy a crappy T/C that you have to buy several scopes,mounts all but another gun for. They are a pain in the ass and not worth the trouble, hell, buy a used rifle if your willing to hack it anyway and have something worth owning. Switch barrels are like having 2 sets of tires for 1 vehicle, no matter the condition the tires you need will always be the set in the garage.