I still use my leopold vx 2 that my father purchased for me in 1971. That was the last year for over the counter mountain goat tags in Montana (the Bob Marshall). I am still using that scope, in 30 years I will be 90 and if I still am able to hunt that scope will be used. My father is 86 and killed a buck mule deer and an antelope within an hour of each other. I can only hope that I will be able to do the same.