You won't go wrong buying a Vaquero.They are a strong gun and will hold up to many years of use.I'm not into Cowboy shooting so I don't know if there is any caliber restrictions.I have a rare Vaquero w/a 3 3/4"bbl in 45 Colt.Unfired and will stay that way.I believe the 3 3/4"bbl was a Davidson's special.
Ruger Redhawk