I know the air rifle pellet shaped ones fall through a cylinder bore they also fit snugly inside a 16 gauge brass case. As to my friction idea, in theory they only bear on the barrel at the skirt and nose.
I know the air rifle pellet shaped ones fall through a cylinder bore they also fit snugly inside a 16 gauge brass case. As to my friction idea, in theory they only bear on the barrel at the skirt and nose.
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