Fascinating !!
FWIW... Spud gun fuel variants:
http://www.inpharmix.com/jps/Liquid_Combustion_fuels.html
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OT:
I vaguely remember a book where a prototype UK tank with liquid ammunition propellant (sic) was hidden for safety at outbreak of military coup during field trials in Middle East. 'Liquid propellant' allowed a low, humpy turret like a tank-killer plus surprising capacity for ammunition storage. The 'extraction' team wired the crucial fuel-injector breech with C4 and were about to blow it when helo's gearbox graunched. Within a few chapters, they had Saudis, coup leader & IDF chasing them...
Couple of reality checks: They had designer along to keep the one-off prototype sweet. Yes, it had a bunch of issues.
IIRC, book title was something like '{1 forgotten word} target', being a UK version of 'target of opportunity', where-in every-one who could safely range must attack. And, yeah, they're 'it'.
IIRC, book began with a seige take-down, and was sequel to one where protagonist's wife is killed by bomb on plane meant for him. There's a young son...
Sorry, I've just spent half-an-hour googling titles / subject / author without success...