i dont believe it is a very old bullet. the second picture is an indian artifact im sure! someone who knows about that stuff will for sure know what it is. nice find!
The bullet is not a .22lr,a.32RF,or a .38RF as those 3 used a heel type bullet,the bullet pictured is a straight based bullet. There is nothing to guage the bullet size by.From the style of the bullet I'd say it was made between 1880 and 1935 when a lot of cartridges with that type of bullet were discontinued.