[Minecraft Concepts] 1000+ TNT Duplicator Glitch (no mods or command blocks)

[Patched in latests update] This used no mods or command blocks. Found a bug in the game where you could duplicate TNT with arrows xD

This is not just your normal blow up dirt and stone TNT, it also breaks through obsidian and bedrock! All you need is 4 TNT and a few stacks of arrows and you are good to go. This worked in vanilla survival Minecraft 1.7 & 1.8 snapshots.

World Download: https://www.mediafire.com/?q9ajbokbs7z39z8
(Before i blew it up) [version 14w11b]

Tutorial:
Song: Back From Århus - Small Colin
http://freemusicarchive.org/music/Small_Colin/Mono_Box