Tipton bore guide tweaking - Tipton Universal Bore Guide Kit 777-888

It works great but you have to make sure to butt the set screw against the rear wall opening of your rifle bolt chamber so that the guide tip is tight to the bore. The bolt collar on the guide rod will slide loosely in your rifle chamber. Slide the bolt collar so that the set screw is butting against the rear wall of your chamber opening whilst holding the tube tip to the rifle bore. Doing this will butt the guide rubber tip firmly in the bore opening and cannot back out.