I was out hunting last week and after shooting my rifle with a Dead Air Nomad on it I eventually noticed that the end cap was gone. Not sure if it was blown off during the shots or how it came off...my question is can the suppressor be shot without the end cap on it? I am going deer hunting this weekend and won't have a replacement in time. Also will the POI shift if it is safe to shoot without end cap? Anyone else ever experience this?