While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
A hit on the black bullseyes or diamond produces a bright yellow-green ring around the hole. A shot landing on the orange border leaves a bright white ring. Either way, with a 20-25x scope you can easily spot hits at long ranges. These targets work great for 300-600 yard training.
The range I shoot at only goes out to 500 yards but with my Leupold 4.5-14 scope the 8" round Shoot.N.C targets are plenty big enough so they probably would work for you out to 600 yards as well. They have an adhesive backing and leave a fluorescent green ring where the bullet goes through so the holes are easy to see. I recently bought a pack of the 12" square sight in packs but haven't tried them yet.