I have a 1.5-4x and a 2-7x in detachable mounts on my 416 RM. Between the two I have over 300 rounds through the rifle with no issues. Held zero traveling to South Africa in May and shot a bunch of stuff including Buffalo. I contacted the custom shop before purchasing the scopes and was told there is no difference in recoil resistance between any of their scopes. The difference is in the lens coatings. I set them and leave them alone. Simple to just know and use holdover for the various ranges.
