Originally Posted by
MistWolf
F2S is correct. Using a rest and eliminating the human factor only tests the mechanical accuracy of a rifle. For use in the field under dynamic conditions, how how accurate the shooter is with the rifle is more important. An extreme example is a rail gun. It's mechanical accuracy is phenomenal but it's practical accuracy in the field leaves a whole lot to be desired. A good number of members of this site spend quite a bit of money, time and effort to ensure their ARs are as accurate in field use as possible, without expending a dime to improve mechanical accuracy. To borrow an M4ism, that is what is called a "clue"