The rifle my LW's broke on wasn't shot much, as mentioned 84L Classic. With Leupold 2.5-8x. Not much use or scope weight.
I really don't think it is a matter of use, and maybe scope mass, but the strain on the aluminium being too much. Also, mine were torqued correctly with a torque wrench.
So many people on here have had issues that I think I won't be going forward with them, so much of a problem if they go tits up on a hunt.
And people talking about a weight difference don't really know what that difference is between something like the steel Warne's and Burris Zee's vs. the Talley lightweights. The difference in strength is far more important IMHO vs. the extra 2 oz's in weight.