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Old November 13th, 2007, 12:00   #2
ILLusion
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Join Date: Jun 2002
Location: Toronto
That'll be tough, since almost any die-casted product has some zinc-aluminum alloy used as the mix.

The Guarder shouldn't have broken at 380fps. What was the condition of the breakage? (ie temperature, were you doing lots of dry-firing, etc.)
What's your piston head/cylinder head?
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