Cannon glitch

Wtf is this lol, cannon hits 4 times in a row only suppose to hit twice if you don't know he pks 300m from this in one day lol. About 40 people follow him around every time lol. Just look behind him a huge pile of people saying gf. Rofl I see how he does the glitch now -.-
http://www.youtube.com/watch?v=BRyfrOEeruU&feature=related

 

thats pretty cool, how does he do it?

 

More then one person with a cannon can hit someone in a non combat zone because the bullets go slow it doesn't register so 100 people could hit the same person in a non - combat zone if they do it at the right time.

 

its not really a glitch, its just 2 people attacking the same person once in a multi cmb zone.

 

It is non - multi combat zone lol.