Made of 7075 alloy tensile strength of 75000psi and designed by Melvin Forbes for use on ultralight rifles what is not to like about them. If they can take the recoil of a 284-shortmag cartridge that weighs 5 lbs and maybe 6 with a scope it can sure take a 338 win mag. I can mount the low mounts either Lightweight or Steel ring and put a Swarovski 4-12x50 AV on it with no clearance problems. That would be on a VAnguard but since they have the same bolt spacing as a Remington 700 will work as well. Their lows are about Leupold medium. I have lightweight's that I used deer hunting on a 25-06 Abolt and used a Kahles 3-9x42 with no clearance issues. Not sure if the Zeiss has a much bigger frontbucket then the Kahles or Swaro though.