some fun facts on cartridges vs calibers vs designations

[TEXASforLIFE]

Interchangeable Cartridges - Midsouth Shot Report

The barrel stamp tells you what cartridges to buy – doesn’t it? Rifle and handgun barrels and chambers are cut to close tolerances. Any given cartridge is made to fit a chamber of specific dimensions. The headstamp on the case should match the stamp or inscription on the barrel. But it doesn’t...

midsouthshotreport.com

the crazy world of calibers and cartridges and how some are named/classified. 1 that was left out was a .256 (? could be a newton ?) that's a .264 rather than a 25cal like the 257roberts.

 

[3L120]

.256 was a pistol cartridge used in the Ruger Hawkeye. Amazing that I can’t remember last nights dinner, but can remember that!

 

[TEXASforLIFE]

.256 was a pistol cartridge used in the Ruger Hawkeye. Amazing that I can’t remember last nights dinner, but can remember that!

I remember it on another forum discussion, but it was a rifle round. I might check on quick load as it might be listed on there?