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|  Case study 
			
			I wasn't quite right with the letter code Rick. H is the code for Grenade Launcher Blanks. I have a breakdown of the codes somewhere but am having to rely on unreliable memory. The letter Z in the identification code indicates nitrocellulose propellant. The MF identifies the Melbourne Footscray factory. If it was Maribyrnong it would be MG. David | 
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