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That sounds about right. As a rough rule of thumb, mortar-fired
firework shells go up about 100 feet per inch of diameter. Many small-to-medium municipal shows don't shoot anything above 6" in diameter, because larger mortars have to be buried for most of their lenght, while 6" tubes (or smaller) can be set above ground. Larger shows will include 8-12" shells, and even larger shells are available (though they don't see a lot of use). |
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