"Bowling Balls"- - - -??????
Diamong G (Mike),,, many years ago (1977) I was on this search and destroy kick,, I shot lots of junk with my NEW 30-06!! Yes,, bowling balls too,,, the colored "plastic" type exploded quite violently into fragments that I can still find to this day in my gravel drive! The black balls were quite different and I don't know how to distinguish them from the outside,, some just blew off chunks,, others were of a cork core with hard plastic outside they were not impressive at all.. I guess my advise would be the swirley colored plastic as these could be cut, then drilled, sheet metal screwed or even maybe tapped!!! Keep us posted,, you always come up with some great ideas (I'm thinking of the glass platen plunge line maker) ---just wish we lived closer!!! ---jon
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