Any double action revolver can be carried with all chambers loaded. Iver Johnson introduced the transfer bar system early in the last century. Smiths were always safe to carry with full cylinders, but added an additional hammer block in 1945.
Colt SAA (Peacemakers) and clones load 5, as with early Ruger single actions, and the like.
True, all modern revolvers can be carried fully loaded.
A retired New York City cop once told me cops would keep one cylinder loaded with a $20 bill because they knew that was the one place their wives wouldn’t look.
Hey T_S how you doin’? Hope you guys get some moisture but not too much out of this tropical system. As I recall, the SAA loading sequence was: Load 1, skip 1, load the other 4. That way the empty chamber ends up under the hammer/pin.