This is the highest proficiency level for the use of guns and rifles.
Unlike the other weapons proficiencies, the gun proficiencies do not affect
one's rate of attack, merely the accuracy with which one hits the target.
This means that those who learn the sniper skill will do more damage with a
gun or rifle than someone who hasn't.
Note that this skill does not affect the use of non-technological missile
weapons like bows and crossbows at all.
People are not termed snipers for nothing. If a person with this skill can
take the time to set up their shot (i.e. fire the shot that initiates combat)
they may be able to take down their opponent with a single shot.
_You cannot learn this skill if you know any of the following,
and this skill prevents learning any of the following skills_: