Hmm. Really? Thanks.
Yep. It's the quick and dirty way if you have an extra pair of hands to help. You can also put the gun on a vise, pull the bolt and look down the bore at an object 100+ yds away, then move the reticle to that object in the scope. That should get you pretty close on paper at 25-50 yds. Then you can fine tune. You don't need a bore sighter with a bolt gun or AR.