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8:04 AM
January 9, 2009
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I would be afraid I'd punch a hole in the far wall! 
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12:12 AM
November 14, 2010
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Hey Rep We made a pyrodex powder propelled bowling ball mortar in my local community college back in 92.. Worked great !!!
Ive been kickin around the idea of a golf ball or a tomato paste can cannon ever since, this is a re-inspiration
9:06 AM
April 16, 2010
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Hi Clifford,
I'll bet that bowling ball mortar was IMPRESSIVE! How big a charge of Pyrodex did it take? What kind of range did you get? How many foot/pounds of muzzle energy did it generate? Inquiring firearms lovers want to know
– Don who is old enough to fondly recall his BB machinegun from the early 1960's 
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