Welcome to the forum, Chris/col73.
Emike beat me to asnwering most of your ID-questions by a few minutes. I agree, the bullet in Reply #4 on the left looks like a US Gallagher Carbine bullet. On the right, a US "machine-grooved" (also called machine-pressed-&-turned) minie. As you may already know, those were manufactured in a bullet-making machine rather than being cast in a bulletmold.
We need to see close-up photos of the base-cavity to be certain about their ID.
Reply #5 and #8 are definitely US .52 Sharps Breechloading Rifle/Carbine bullets, not Spencer bullets.
That being said, you might have a fired .52 Spencer bullet in Reply #3, seconf from left. Second from right looks like a fired CS Gardner minie. Again, we need photos of these bullets' base-cavity to be certain about their ID.
Reply #7, they are definitely US/CS .52 Sharps "Ringtail" bullets. I say US/CS because we know both sides used and manufactured them.
Reply #9, bullet at far right looks to be a nose-cast latewar CS 3-groove minie. (The bulletmold's filler-hole connected to the bullet's nose-tip, and the resultant "sprue" the after casting was nipped of, leaving a small flat spot on the very tip of the bullet's nose.) That type is plentiful in 1864-65 battlesites in Virginia, because the Virginia Confederates made and used huge numbers of nose-cast 3-groove minies after manufacture of the Garner minies was discontinued.
Again, welcome to the forum.
Regards,
Pete
