I thought the biggest difference was inside the bolt itself.
The M-70 has a heavy firing pin and spring whereas the Kimber has a thin little pissant unit that makes them prone to miss fires.
Dont know for sure because I've never owned a Kimber.
Just relaying what I've been told.

Maybe someone who owns both models could post some pictures to compare the bolt guts...???

I like it here. They let me swear.