Your problem is not uncommon in the over 50 age group. Sadly there is not really an ideal fix. You can have lenses that allow you to focus on your gun sights. You can have lenses that allow you to see the target. But to be able to see both wii require a bifocal. However, you're going to look like a bobble head doll as you shift your focus back and forth through the respective portions of the lens. The problem will be worse at indoor gun ranges. Bright light is your friend when it comes to maximizing your depth of focus. My suggestion, buy a good laser and blast away!!!