Comment: Yes it is

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In reply to comment: Wait guys, I do not shoot (see in situ)

Yes it is

He averaged a shot every 2 seconds and was hitting (at least) 1 in 6 (assuming each victim was only hit once and each hit was a kill shot - which it probably wasn't).

I guess we can argue if it's possible, but it IS EXTREMELY extra ordinary... especially for a crazy kid.