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 1200-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.