I’ll try to make my question simple. I want to buy a used SA rifle. I haven’t seen the exact thing I want but close. Here’s my “plan”...buy the used one and shoot the hell outta it for practice. Then buy a different bolt and barrel for the caliber I want, and use that for hunting. Example: I buy a nice 6.5cm, or 260, practice with that all year like a trainer, then a few months before season switch the bolt/barrel to a 6.5 SAUM OR 6.5 SS and hunt. Any potential issues? The ones I’ve looked at are custom actions, would the second bolt I ordered fit perfectly? Or would it need to be trued to the action? I hoped being a custom it would be plug and play.