[Hammerslagger]

There are lots of good scopes. There are significant optical quality differences between cheap or promotional quality scopes and "moderate to expensive" price point scopes. There are diminishing optical returns (significantly improved performance) between moderate priced scopes and very expensive scopes or binoculars or spotting scopes. Often a moderate price rifle-scope will perform very well on a rigid breech block rim-fire or or light recoiling centerfire rifle.

However, when you mount a rifle-scope on a semi-auto or magnum centerfire rifle, few promotional or moderate priced scopes are mechanically built to stand up to the stresses of the recoil and/or vibrations from the action cycling. One major scope brand used to advertise that their best scope was good for like 8000 shots from a .375 H&H, while their next to best scope was good for only 2000 such shots.