you got a mixed bag time frame group there ---some are newer , some are older -- the flat or hollow based larger diameter type bullets ( loose bullet shoved down over a powder charge ) are black powder type of the kind used around the civil war era (the smaller ones of that type might be pistol rounds) -- the longer thin type ones are 45 /70 springfeild trapdoor type bullets still black powder but "cartridge " type say 1873 to early 1900's --see the crimping rings where they were mated into the cartridge * --the copper coated bullets are more modern like the last one is.
the ones that look civil warish to me is large diameter shortish 2 ring type one above the 5 -45/70 type bullets and the smaller lookig ones on the right hand side
most muzzle loader type civil war type black powder rifle bullets tend to be on the large size diameter wize * 69 and 58 are quite common and often have 3 gas seal rings ( but no mating marks" since they were simply shoved down the barrel over a loose powder charge ) they are commonly called "3 ringers"-- later on as blackpowder cartridges came into use smaller diameters became more common in these cartridhe rifles like -- 52 ring tail sharps and 44 henry these blackpowder cartridge bullets often have crimp markings where the bullet and casing were "mated" together