The Ballistic Laserscope III 4-16x50 Model. It not only works for centerfire cartridges, but works on most rimfire, muzzleloader and slug guns as well. Built-In Laser Rangefinder Laser range capability out to 1,200-plus yards with reflective target, 750-plus yards with non-reflective target. Automatic Trajectory Compensation Push the button and a bright-red, illuminated dot signifies your new aiming point. Easy Programming The Eliminator III comes with a programming book, and there is a web site app to help get the precise programming numbers you need based on your elevation, atmospheric condition, and cartridge of choice.