How’s about these for tha end of civilization arms:
A reproduction Remington New Army Model (cal 0.44).
Any black powder long rifle; I have an Itilian made Remington “Zouave.” 0.57
I have a good supply of ammo including reproduction Minie balls plus Pyrodex and black powder. I do wonder what the shelf life is for caps.
When you start adding more zeroes and decimal points to calibers, it indicates that’s the correct size.
The Remington is simply a .44 and the Zouave is a .58.