For me, it's the FA Model 83 500WE with 6" barrel, micarta grips, no brake, and heavy 440gr loads using H110 and shooting with one hand. By comparison, I have owned, loaded for, and shot the 445SM, 454Casull, and 45-70 in handguns, but they (the 445SM & 45-70) were all heavier. (Comparing the 454Casull to the 500WE is like comparing a 357Mag to a 44Mag. The 500WE makes the 454 feel like a joy to shoot.) IME, the weight of the handgun plays such a huge role in recoil energy. Shooting rifle cartridges through 4-5 pound "handguns" with muzzle brakes does not feel the same as a revolver that wants to pull your hand off your wrist.