First, the most common aiming error
is to shoot too high.
Sometimes well-executed shots fly off course into a marginal area on the anirrial, whether it's due to simple aiming error
, excitement, arrow obstruction, or because the animal moves at the shot.
Unguided projectiles show large missed distances on impact, even at relatively short ranges, due to wind and other meteorological conditions, muzzle velocity error, aiming error
, and other factors affecting the projectile path during flight.
We divided endpoint error into two components: aiming error
and distance error, representing directional (left/right) error and overshoot/undershoot error, respectively.
The shooter should be close enough that aiming error
will not cause a projectile to miss the unit, if a live round indeed finds its way into the firearm.
The gobbler was standing a mere seven yards away when I squeezed the trigger, so only a slight amount of aiming error
would have caused me to miss.
Even a 3 [degrees] aiming error
due to cleaning or film changing can result in a 25 percent loss of visible viewing area.
According to their tests, the standard deviation of aiming error
for the best, formally-trained operational snipers was three times worse than tested High Power and Long Range competition shooters sufficiently skilled to compete successfully in national level match competition at Camp Perry and the like.
That doesn't leave much room for aiming error
(don't even think about wind drift).
With a good 4X scope we can resolve 1/4", meaning our aiming error
will be about 1/4".
Plus, a lower mount position relative to the barrel significantly decreases aiming error
due to tilting--an important factor when firing at small targets like prairie dogs or ground squirrels at long distances.
This makes the PDX1-12 very effective in reducing aiming error
at medium defense distances, as the likelihood of impacting an attacker with at least one of the three buckshot pellets is increased.