Please, PLEASE tell me there is a rise or berm in the bush that we can't see in the video. I sincerely hope you aren't firing off 7.62 rounds at cans with no safety backdrop... *looks pointedly at deathfun* ... are you? 
The mine location didn't have as significant backdrop in comparison to the other location (in that particular direction), but was far more removed from everything and the tree cover was extremely thick.

EDIT: What's wrong with club music Klaus?

EDIT2: The fellow who did the hipfire was curious about it (actually, we all were). One off sort of thing
Otherwise, we don't do stupid things with firearms
Not like that group of people who posted on Facebook "The one gun salute" where they all wore buckets on their heads and fired a shotgun into the air
That guy is in the military no less