I have a Leupold VX-III 1.75-6x32 that has made two trips to Africa and used on three elk hunts--all on a .375 H&H. It has also been on elk hunts with two .338-06s, a 9.3x62 and a 9.3x74R, and it currently resides on a .338-06 Improved. In addition to the hunts, it has been used in a lot of load development in those rifles, as I have never used anything but hand-loads in the rifles mentioned. I also have a VX-III 1-4x20 that has been used on several different rifles including a .458 Winchester Mag, and which now cycles on and off of a custom 7 lb 4oz. .404 Jeffery. Both were purchased used, here on the Campfire, and neither has been back to Leupold for service or repairs.