Good advice here.

The best advice though.................buy,or plan on buying all three frame sizes...........you're gonna want to do it anyway!!!

Seriously, the K-Frame have a bonafied history of SOME revolvers splitting the forcing cones with use of full-house 125 grain .357 Magnum loads. BUT, a lot have not and some judicious shooters stick with 158 grain and 140 grain loads.

The L-Frames handle excellent and will handle any safe .357 Magnum load.

The N-Frames handle well also but some folks with smaller hands go for smaller sized grips. Of course the N-Frames will also handle any save .357 magnum loads as well.

Recoil of full-house .357 loads in a K-Frame revolver will be more pronounced than in the other two. But it can be learned to handle it well.

I own all three frame sizes and have yet to decide on a favorite. However for all around "field" use I do lean towards the L-Frames.

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Have guns...will shoot'em.