Here you go.
Yes I could get some sparks using a grinder but no I was not able to
even singe a paper shop towel. It was nowhere even close to burning.
The dark smudge is lead.
I understand "My range My rules" and I wouldn't have it any other way,
even to the point of offending Harry.
If you could have a friendly conversation I would suggest a test. Get
a handful of miscellaneous pulled bullets, some BiMetal, some gilding
metal. Start dropping them on the concrete and challenge the guy to
tell you which ones sparked. I bet he won't beat the statistic
probability.