You did not give us any size measurements, which are particularly necessary for correct bullet identification (such as, diameter is .425-inch), so we can't ID them for you with much certainty.
http://www.treasurenet.com/forums/what/136849-please-read-before-posting-items-what.html
That being said, the first bullet looks like a modern "Maxi-Ball" made for use in Blackpowder firearms target-shooting or game-hunting. In the photo below showing three varieties of Maxi-Ball, yours is the one on the left. In that photo, the yellow in the bullet's body-grooves is a bore lubricant. The other photo shows a larger-caliber one (which is also longer than yours), and the box they come in.
Your other bullet appears to a fired .30-caliber-or-thereabouts copper-jacketed lead rifle bullet whose front end "mushroomed" on impact.