I have a selection of four .58" cartridges which I am struggling to positively identify. All are of different caselengths which I understand is a key identification feature with this calibre. Also the last round has a very definite taper. Can anybody help with identifying these rounds and, perhaps, a brief history for each?
From (L) to ® I think they are;
.58" Berdan Musket, .58" Remington Musket, .58" Berdan Carbine, .58" Musket