Originally Posted by
IronButt
I don't know what Colt recommends, but some 1911 mfgrs recommend shooting 2-500 rounds of full power ball for break-in.
It goes against everything I was taught, but Wilson Combat recommends shooting 500 rounds of full power ammo WITHOUT cleaning. Just keep adding a light oil to the rails, bushing & barrel without cleaning off any dirt. The dirt & the oil turn into a slurry & do the final fitting & polishing of the moving parts.
The Colt probably doesn't have the tight tolerances of a Wilson, so 200 rounds should do the trick.