They are just basic revolver bullets. Very hard to put a calibre to them but not “historical”. I wouldn’t date them as Victorian. You could find bullets like that digging in a modern range.
The first one looks like a modern factory .41 mag ( 1964 onwards, the short nose being quite indicative) but the lack of deformation is interesting. The second looks like a standard .38 special
Not 1850s more like 1960s I would say. The first one has rolled knurling to hold a liquid dipped lubricant which makes it 1920s (earliest) onwards to present day The second one is cast judging by the cannelure but in both instances the lack of bullet before the crimp ie a short nose makes older dating very unlikely.
Old bullets had a lot of nose but little behind it because black powder dictated there was no room left in the case. Modern bullets tend to be the reverse, all behind the crimp because there is so much space that needs to be filled to achive a reasonable loading density.
These do not appear to me to be historical bullets and perhaps you should reconsider your dating