Something don't sound right, but if that is the case, you could try putting a shim under the scope in the rear scope ring, I don't want to come across as making the assumption that you don't know what you're doing but make sure to start at 25 yds. and keep it about 2 inches low at 25, again if you already are doing this, or you are sure you're shootin' good at a 100, don't take what I just said the wrong way. The shim should work, just make sure you get a competent person to get it right for you, it needs to fit right.