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Old June 6, 2017, 11:25 AM   #6
Gunplummer
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Join Date: March 11, 2010
Location: South East Pa.
Posts: 3,364
The Germans were working on some type of large bore, long barreled cannon that had "Boosters" at various stages of the tube. I never had enough interest in cannons to read the rest of the article to see how it worked out.
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