Mark, you hit that nail square,,, if not for the sprue these would pass for wheel bearings,,,
We dropped one on the garage floor and it bounced, talk about hard.
Conversation with my Grand Daughter, I told her how I was given the bad lead by a good friend, I have now learned to cast a few balls from a new stock of lead before casting 200.
So My Grand Daughter said, "So would you say you learned that the HARD way?". OK I give, not funny now, but when she said it I rolled