Hello, I've been an on again off again fan of the "Centimeter" and recently stumbled upon a bargain priced series 1 Kimber Classic in .40S&W.
I reamed the .40 barrel resulting in an amazingly well supported chamber then added a 22lb recoil spring and 25lb mainspring, installed the newfangled AFTEC extractor and headed to the range with boxe of ammo from mild (UMC) to wild (handloads tested in a lunchbox Nowlin/Para).
The mags, Brownells/Shootin Stars that needed the HD Wolff springs!
The gun is absolutely flawless and accurate beyond any measure I'd hoped for!
A very interesting conversion. I have a few questions though. Did you have concerns about the additional chamber pressures since the original design was for only the 40 S&W? How did you modify the magazine well?