BAck in the 1980's, when auto's were just on the horizon as duty guns, I was told at FLETC that a fed organization (Border Patrol or Treasury maybe, maybe the academy staff) had shot the assorted K type frames (Colt, Smith, Ruger) till failure. The Rugers walked away with it.
I've got a bit more than zero experience with Colt revolvers, but I'd like to know how many rounds THAT took. Seriously.
That would take some effort.