Can K-Frame S&W Revolvers Handle Full Power .357mag Loads? (Cracked Forcing Cones)
This expert analysis from TheYankeeMarshal details a historical design flaw in older Smith & Wesson K-frame revolvers, specifically the Model 66 Combat Magnum, which made them susceptible to cracked forcing cones when firing full-power .357 Magnum ammunition. The issue stemmed from a necessary modification to the forcing cone to allow cylinder crane clearance. Newer models have rectified this by altering the crane design, making them safe for modern, high-pressure loads. This information is crucial for owners of older K-frames considering their ammunition choices.



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