Hello, Hawkeye...Nice collection. That 200gr. 452 you mention could be from a .44 percussion revolver.
The pointed one in center of 2nd. row looks to have a "heel"..smaller dia. portion..that fit into metalic ctg. case..it is I believe from a .52 Spencer rimfire...as is the fired case beside it.
In bottom row..from left..#5 & 8... are Williams patent cleaner bullets.
These were originally issued by arsenals 1 to every 10 ctgs..solders were instructed to use after every 10th loading. Later they were issued 3 in 10..and later in the war..6 to 10.
These had a couple of concave shaped zink washers..which expanded into rifling grooves when fired sweeping out built up fouling from the black powder.