I bought gobs of them from him over the years. Carl & Jack Bell bought some more after. He told me of a couple accidents he had had over the years dunking them in vats of wax and cooking them in his barbecue. Thats not good testimony to his safety record.
"When in doubt, drill them out." Its a small price to pay.
At Mansfield, a perfect lead sabot to one of these walked in the door. I was able to set my iron egg right down in it like it fell off yesterday.