I agree, all of this can be confusing for a person. It would be nice to see the manufacturers put more info on the bullet packages.
Like lonewolf5348, I have been told the bullets in the T/C XTP 30 packs are the .452 240gr. Hornady and the black sabot is the MMP 24. These have worked great for me in the past for deer hunting and target shooting.
I have also used the Hornady .430 240gr and the green MMP sabots. These shoot great out of my T/C muzzleloaders as well.