I do it all the time. Usually, I buy a new scope and take the old scope and put it on another rifle that I don't use as much or just give it to my son to mess with. I've been doing this over the last couple of years with rifles that I inherited a few years back. I use a laser boresighter to get it lined up on paper, shoot at 25 yards then go back to 100 yards. With a bolt action, as pointed out above, you can remove the bolt and look down the bore to boresight it.
There aren't any shortcuts. Just because your scope was sighted in on one rifle doesn't mean it will be any where close on another.