Well until it happens to U nobody can really say what they would or will do!!! I can tell U that when my daughter and I came under fire, we were chewin dirt and screamin , quit shooting, there's people up here, hold yer fire...but the fool had buck/ bull fever so bad he didn't know which way was up...when he finally stopped shooting we saw him run in the opposite direction of the elk!!!!
As for shooting back that would do niothing but escalate the situation, and you would most likely end up in jail! with or without a claim of self defense!!!!