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This may be the specs here of the current record by Grucci.
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The largest aerial firework shell weighs 1,087.26 kg (2,397 lb) and was produced and launched by Al Marjan Island (UAE) and Fireworks...

If it was me I would buy the hemi,'s out of China or that one plastic hemi maker out of Italy. But I'm sure they wanted to do it all themselves. Be interesting to see what the rules are for this....

I do not get too excited about these big shell events. Maybe if that was a 62 inch salute or something, that would get my attention for sure. We certainly have to give credit to this group for...

Apparently something went wrong with the attempt. Now we have to wait to hear what happened.
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47:36 min
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https://www.youtube.com/watch?v=L1DwDa9WPUc