When I first started big game hunting at 15 in 1980 I bought a Remington 700 BDL 30-06 and after buying the rifle, all I could afford was a cheap Burris scope. The first year was easy, shot a cow opening day and then a nice buck during a pretty warm deer season. The second year I had a bull tag and there was lots of snow and cold. Opening morning I came across a nice 6 point bull and pulled the rifle to my shoulder. All I could see in the scope was FOG, moisture was inside the scope housing. I just about wrapped it and the gun around a tree as all I could do was stand there and watch that bull disappear into the timber. I went back to camp, took the scope off, and sighted the rifle with iron sights. Ended up shooting a spike later that season, but that was only a small consolation for what should have been. The following year I had a Leupold on top of the rifle, and never had another issue with a scope.