D2 is all over it, that is a copper jacket. Percussion caps are smaller than that, but look similar. see attached pic.
Show us better pics of the 2 brown bullets on the left of the first pic, the ones with the concave bases, a diameter would be nice also. They look like CW bullets to me, but seem a bit small, as I expect them be larger than .5" in diameter.... .58" is the 58 caliber that I'd expect to see.
I see 2 dropped musket balls, and 1 fired one. They could be CW. I do not see the Minie balls that Diggerkid sees. I suspect he is looking at the 2 concave base bullets, without noting the small diameter indicated by the ruler. I also see lead deer slugs in the mix.
JMHO. Nice finds and good luck to you sir.