Use save to check. Observed: Protection from Normal Missiles doesn't protect from certain unenchanted missiles. Expected: Protection from Normal Missiles should protect from all unenchanted missiles. Example: AROW1-6.ITM bypasses PfNM; guess is because the item ability "Is arrow?" is set to 0. Actually, the problem lies in the ARROWHVY.PRO, though it's included in PROJECTL.IDS.