My wife and I are departing Saturday for her long-awaited leopard hunt. On Sunday evening, we did a final check of her rifle zero. Nearly a foot off at 50 yards!! Inspection of the rifle revealed a broken screw in the rear scope mount and a shim falling out. I appeared that the "gunsmith" that installed it used the wrong type of base and then over tightened the base screw, breaking it off inside the mount. How it worked for a 4 day class at Gunsite, I cannot explain. Perhaps the front mount was holding it well enough to get by. Of course, her rifle is a Sako, so it uses proprietary mounts not available at any local gun store. In the past, it has taken us weeks to get these mounts. I ordered a set from Brownell's and explained the dire situation. I ordered the mounts Sunday night and they were at my house Tuesday! I mounted the scope late last night. It is off the the range today. Brownell's saved my wife's hunt. They have earned my future business. I recommend them highly.