I kinda have an idea of what adjustable objective scope is, but not for sure. I know that there are yardage numbers on the outside of the objective lens. Can you sight in your gun to a certain yardage, 100 for example, and then dial up the scope for 125, 150, 200,....... Will the bullet then be directly on at these ranges. I need some info, bout to go crazy racking my brain. Almost seems impossible to me w/all the different guns and calibers.