What should a lead civil war bullet read on my whites dfx

[49er12]

Just curious where I live it seems is like the moon lucky to find anything of significance, however scan over a bullet yesterday and the bar level went rather high but read in the 50s does that sound correct to all you expects, I believe they are lead so it doesn’t read as in metal would, thanks

 

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[Davers]

On my Whites XLT 58 cal Minnies usually VDI'd around 53- 58-60 ..58 if I recall right.

Different machines = Different #'s
+
Different Ground ?
GL

 

[IMAUDIGGER]

Were Civil War bullets pure lead?
Modern lead billets are an alloy of lead and another harder metal.