Installation could be a major factor of course however dozens of pre 64 post war M70s all operate somewhat stiff and this includes many others that I have operated.
Also all of the aftermarket ones on mausers are not that easy.
A factor may be that the Kimbers parts and spring are not as heavy? The Kimbers operate much easier.
How can it be that all of these pre 64 M70's are somewhat stiff and rough and the Kimbers are smooth? Installation?, Workmanship? I don't think so but then I never installed one.
In any case I still prefer the M70 design.
No, it's because they aren't timed properly. The M70's can be made every bit as smooth as your Kimber. Same with the mausers. Not all Kimbers are smooth. It's not the shape it's the fit.
Terry
