Nomercy, you're looking for a Ruger Redhawk in .41mag, not a Super Redhawk. I LOVE my 5.5" blued model, have had it for years. The Redhawks and Super Redhawks have vastly different lockwork. The Redhawks feature 1 spring for both mainspring and trigger return spring whereas the Super has more conventional lockwork with 2 springs. What that means is the Redhawk offers exceptionally smooth double action pull that don't stack up like the S&W or the Super Redhawk. With a spring kit and some polishing the Redhawk action rivals the famous Colt Python's slickness. As to the S&W models, the 58 is the service version whereas the 57 & 657 have adjustable sight and target hammer/trigger. They make (or did) a Performance Center version of the 657.