I will give you a piece of advice my buddy and I have tried. If you want to extend your lethal hunting range out to 40 yds., shoot at 60-80 yds. We have been shooting like this for awhile in preparation for Elk hunting out west this coming fall. We shoot at a Mackenzie 3d deer. Once you can start grouping them at 80 , when you step up to 40 it seems a whole lot easier. By the way realize your groups will be a bit bigger the farther away you get unless you are an extremely accomplished shooter, just make sure you group within an acceptable killing area. Best of luck to ya, and good shootin.

Shane