I dont' shoot my deer guns a whole lot compared to some guys here, but I probably put 100 rounds on them every year. I've had 3 different Leupy's, a Swaro A, a Conquest, and an old 4x Denver Redfield on a particular Tikka 695 7mag I like. I've shot.5-.750 groups routinely with every Leupold that's been on there, all with factory ammo. I haven't had a single hunter show up in camp (probably 75 or so) that's had trouble with a Leupold either. Coincidenc?, maybe so, but I don't think leupold failures on hunting rigs are very common at all. The SwaroA is the only one that gave up on me.