Here are (4) video clips of a Pratt & Whitney Sine Bar Rifling Machine circa 1900 (No. 2?) running. It sure must have been loud with a room full of these running. I'm not sure if they had it fully set up. When the rifling tool reaches the end of its stroke (left end) it is suppose to toggle an indexer bar, but it didn't appear to be activated. Appears they had an old section of an octagon muzzleloader barrel set up just to initially play with the machine.

Clip 1:
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Clip 2:
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Clip3 :
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Clip 4:
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