jorge, I just took you at your word that you were unfamiliar with iron sights on a Model 70. None of your Model 70s have iron sights? That's mighty odd. Did you buy them like that?

Scopes are not totally unusable in rain or fog - iron sights are just more usable, as long as you have decent eyesight. Besides, as I said before, who is going to take a first shot at dangerous game with a .375 or larger rifle at more than easy iron sight range (150 yards ) anyway? That's why scopes are a secondary sight for me. Just more needless weight on an rifle that is already heavy.