Originally Posted by Sniper03
You will be fine assuming you are planning on making a Heart and Lung Shot. Just remember at 20 yards you will be hitting about 2.0 to 2.5 inches "Lower" than where you are aiming. This due to your line of sight and line of bore at that close a range is different and are not intersecting like they would be at 100 yards. Do not change the Zero on your rifle. To make it simple the scope sets about 2 to 2.5 inches above the line of the bore at the close ranges of 25 yards and under so do not forget to compensate. Just aim about 2 inches "Higher than the normal aiming point at 20 yards and pull the trigger. You will be fine! With the 243 ammunition selection is the most critical issue is to use good deer and game loads. Good Luck and have a great season.
Heck he should be able to almost hit the eye ball as well, with only a difference of 1 1/4 inches.
I can tell you're good at this, too.
My favorite kentucky windage (holding off) was the following:
Set the scope for 700 yards kill.
Then remember belly, balls, knees, feet, knees, balls, belly.
Belly = for a 600 yds shot or 50 yards shot.
Balls = for a 500 yds shot or 100 yds shot.
Knees = for a 400 yds shot or 200 yds shot.
Feet = for a 350 yds shot.
This accounts for the entire arc of a long range sniper shot on a military chest shot.
On a deer, most hunters just sight in for 250 yds and shoot flat anywhere from 0 to 400 yards.