M72 update: 21mm Rocket body, and fuel burn test.

An update for my SubCal law project. This video shows the main body almost complete, and a test of the home made "M7" fuel. As I used a double based powder as my starting point rather than NG and NC I can't guarantee the exact percentage, so I'm counting a lot on burn rate. I have 2 more tests before the Main test fire of a full fuel load.
Next test is the igniter test, and after that a half fuel load test.

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• #m7
• #propellant
• #rocket
• #m72
• #66mm
• #law
• #subcal
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• #cal
• #calibre
• #caliber
• #military
• #double
• #base
• #doublebase
• #fuel
• #test
• #pyrotechnics