Testing for electric match misfire. (bangs and flames)

Sometimes a firework display can go wrong and only fire a small number of effects in one circuit. Here's a demonstration of why that can happen. It's also a chance to blow stuff up at my new bench.
There are a couple of scenarios for misfiring in this situation. It's possible that a slow fire with too low a current will result in some fired effects breaking the circuit either by the igniter blowing clear or the wiring being damaged by explosive movement. The other scenario is that a low voltage firing system may not be able to pass enough current through a long cable run or one with high resistance connections, and in that instance not all igniters may reach their trigger current threshold.
Professional systems tend to use high voltage capacitor discharge to fire all matches by brute force.
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