Page 23 of the shooters handbook
Minor Safey Violation (MSV)
Open, empty long guns that slip and fall – but do not break the 170° safety rule
or sweep anyone.
Stage Disqualification Penalty (SDQ)
Any dropped unloaded firearm on the firing line.
Dropped firearm – a firearm that has left the shooter’s control and comes to rest at a
location or position other than where it was intended.
It has been clarified that if a shooter releases control of a gun and it is in continuous motion then it is a DROPPED firearm....ie a rifle is restaged on a table and it continues to slide after the shooter releases it and it goes off the end of the table. Even if the barrel doesn't break the 170 it's still a DROPPED firearm and a SDQ
If a gun is released by the shooter and is stationary THEN starts to move it has SLIPPED....ie a rifle is placed on a hay bale and is not moving then it starts to slide off the hay bale. If the barrel does not break the 170 it is a MSV.