How do you know if you are getting the best scope for your gun? There are several factors to consider in making that decision. The first of which would be, what magnification and objective lens size is needed? Magnification would be decided by the average distance of shots placed. For those who use the scope for muzzle loaders or shotguns, large magnification above 7 to 9X are rarely practical. Most shots are placed at fairly close range, making 3 to 4X most comfortable. Larger magnification limits the field of view. Varmint hunting often requires high magnification to make accurate shots ...