Need help in identifying misc lead items

[zbrown210]

I need help in identifying these items. They each appear to be lead and i found each of the items at known civil war sites. http://uploads.tapatalk-cdn.com/20160419/88c33895859664eea340a4aa00a307a1.jpghttp://uploads.tapatalk-cdn.com/20160419/a2b3cd4de32989bc3aff7a345314fb86.jpg

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[Full Metal Digger]

Looks like a fired musket ball and a chewed (?) musket ball plus a piece of camp lead. Not sure about the rivet.

[del]

As Dave mentioned the lead may be various "camp" lead and its hard to tell but if that is a copper rivet it could be from a leather harness , lord knows i have tons of (oxen or horse) harness rivets so it wouldn't be uncommon to find .