New or old bullet?

[Vonclemen29]

Was out for a bit before the rain an found this. The one on the left is 45auto the one on right I found. New, old? 38. 44.?? I don't know. Any suggestions?

 

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[Vonclemen29]

The bottom has a cone hollow in the back

 

[absosecur]

I think modern. It looks like a round I call wad cutter. Neat find tho.

 

[HutSiteDigger]

Post civil war..

 

[Vonclemen29]

Ok, thought so. Thanks