I have both, actually several k-frame Model and Model 60 j-frame guns. I have carried a Model 60 rated for 357 mag for many years. To me the recoil is not pleasant but not bad once trained to it. The Model 66 was just too big and too heavy. The Kimber is a nice well made revolver but weighs about the same as my boat anchor, very heavy, which is good for recoil but not for carrying all day.

Try both as rentals at a range and then you will be able to make a better decision.

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I invest in Lead and Copper!