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P1110172
Beaverton History Center, on Broadway, our host
Date: 10/15/2011
Views: 85
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P1110138
Mike Carrick showing the 1790s air gun and kit
Date: 10/15/2011
Views: 33
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P1110140
The original air gun mechanism
Date: 10/15/2011
Views: 41
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P1110141
Demonstrating the valve of the air pressure tank in the gun stock
Date: 10/15/2011
Views: 41
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P1110154
Explaining the Girardoni air gun
Date: 10/15/2011
Views: 35
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P1110143
The air gun shoots .46 caliber lead balls
Date: 10/15/2011
Views: 32
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P1110146
The lead balls shot by the air gun become rifled in the barrel
Date: 10/15/2011
Views: 30
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P1110156
Lewis could fire 21 shots per minute
Date: 10/15/2011
Views: 56
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P1110149
The initial air charge was 850 psf, taking 1,200 strokes to pump it up
Date: 10/15/2011
Views: 36
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