I have a Vari XIII in 6.5-20x40, that I bought new in '82. The first rifle I put it was a pre '64 .30-06. I carried around that rifle for about 6 years, then I pulled the scope and installed it on a .22-250. It was on the 'Coyote' rifle for about 10 years, with a lot of scabbard use. Then I gave the rifle to my Daughter, with open sights, to use. So I put the scope on a 7 mag, in a Model 700, that was 1st year production, for a few years. Then I decided to put it on a .223 WSSM, but had too many irons in the fire, and just got the barrel broke in. So I thought I would send it back to Leupold to have the reticule changed to TMR, and a target knob installed on the elevation turret. Then I would install it on the .300 WSM that Chris (LSR) made for me. And work on the drop chart. Last night Leupold called me and said the threads on the elevation turret are damaged, and they are giving me a new scope, under Warranty. Got to hand it to Leupold for their service.