Compact Constant Firing TNT Cannon (Minecraft)

I made a compact TNT cannon that constantly fires, so long as it has TNT.

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Angevin 70 by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/

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PC Specs:
AMD Phenom II X4 B50 @ 3.2ghz
ATI Radeon HD 7750 w/ 40% OC
6GB DDR3 1333Mhz RAM

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Backup Channel:
http://www.youtube.com/user/Sangran36/

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Note this video was originally uploaded Mar 29 2014