I'll tell you why I recently chose a 4.2" Redhawk in .44 Magnum. I have owned numerous other .44 Magnum revolvers, Ruger Super Blackhawks from 7.5" to 10" barrels (way too long to carry, never could shoot RSBHK effectively due to grip frame shape). Smith & Wesson Model 29 and 629 from 4" to 6" length. I like the 4" Smith & Wesson .44 Magnum revolvers, again the 6" was just too long. The only easy way to carry a 6" N frame is through some sort of shoulder holster. I you are ever seated in a vehicle, boat, canoe, airplane, etc. for a long time, about the longest barrel revolver you can carry on your belt is a 4".
Stainless steel of course is the best material for weather protection, doesn't show wear from holstering, pretty much worry free.
Again, the Ruger Redhawk has no integrated lock. May be more of a cosmetic issue, for some a reliability issue, but for me I hate the look of the ILS system on new Smith & Wesson revolvers. Price is about the same for the Redhawk and S&W 629.
The Redhawk has a reputation of being over built and strong as a tank. I won't be testing out "Oh My God" handloads in mine, but I do appreciate reliability and strength.
It is heavier by 3 ounces than a 4" Smith & Wesson, but with the right belt and holster you probably won't notice that.
I have a 4" Smith & Wesson 29-2 and the 4" Redhawk, if I ever step outside and it's even looking like it might rain, I might sweat, might get mayonnaise on my revolver at a picnic, I'm taking the Ruger Redhawk.
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