I have had 2 Leupold variables fail. A VX-III 1.5-5 that I bought on ebay that was beat to hell. I put it on my 375H&H and about the third shot it went TU. Sent it to Leupold explaining I had bought it used and they sent me a brand new scope. The other was a VX-II Compact on Mrs Blacktailer's 308 Kimber. It started wondering zero so sent it in and it was fixed good as new N/C. I have a few other Leupold variables and they are all on hunting rifles so unless there is load development to be done, they only get shot about 5-10 rounds a year.
Some folks on AR claim Nikons are more robust.
