I purchase my scope and it has been on my 30-06 for years, I have never had to re-sight it in,every year it is right on target. A few years ago we packed into an area to elk hunt, the horses blew up and my gun and scope went flying. I found the gun laying along the trail and my Leupold scope had a scratch on it, worried if it was going to be off I shot it and amazingly it was still spot on!!! You cant go wrong with Leupold, outstanding product!!