Burris' C4 (Cartridge Calibrated Custom Clicker) system gives shooters and hunters the ability to match the elevation adjustment to their favorite cartridge and bullet making pinpoint accuracy easier to achieve. The new C4 riflescopes are a perfect combination of premium optics with the ultimate in click adjustment.
Once you've purchased your C4 scope, send Burris your cartridge information via their on-line Ballistic Services form and Burris will provide a custom knob that matches your favorite load. Your custom elevation knob also shows you, in MOA, the 10 MPH wind for your cartridge that matches the distance. All you have to worry about is holding off for wind with the simple to use C4 Wind MOA reticle. The new C4 Wind MOA reticle eliminates the guesswork with MOA tick marks that extend out to 10 MOA in each direction.