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Originally Posted by
Turial
The number of uses is like trip or sunder, unlimited.
The sniper shot has a 10 second cool down which lets you get off 2 during a manyshot volley.
When used the sniper shot fires an arrow or arrows which has +4 to hit, +1 to the critical range of the weapon, and +1 critical multiplier for damage. On your typical bow with IC:ranged you would see a critical range of 18-20 ( from 19-20)and a multiplier of x4 ( from x3).
Some people claim it applies before IC but I have yet to see a critical on a roll of a 17.