There are a couple of rules established in the Ruger rimfire rule book that conflicts with NVSA's Safety rules.
1) If at any time a loaded gun is dropped it will result in a Match DQ.
2) The will be no warning for breaking the 180. Breaking the 180 degree will result in a match DQ.
3) If at anytime a competitor sweeps themselves with the muzzle of a firearm it will result in a Match DQ.
Nobody ever wants to send anyone home, but for the safety of everyone the above "NVSA range" rules will be enforced.