WOW! That is crazy! Well, I can tell you that it could have easly been a supressed rifle. I own ( 100% Leagly ) a supressed cal .308. I shoot it with "low sonic" amo. You can almost clear your throat loauder than this thing when you fire it. I would NEVER hunt with it. I am a collector as well as a hunter. So believe me, it could have been a poucher hunting with something like it. Im glad no one got hurt, you should report it A.S.A.P in case, god forbid, some one does get hurt in the future.