Ruger New Vaquero= Small frame three digit prefix
Exception, 44 Special three digit prefix, but is marked Vaquero
Ruger Vaquero= Large frame two digit prefix
Exception, Reintroduced 44 Magnum built on a large frame, two digit prefix, but marked New Vaquero
“Model” does not appear in the name of either.
I really don’t care what people call them, just know what you have when you order parts, or list them for sale.
Ruger muddied the waters long ago.