.....
..... and the reason was, Colt revolvers went out of time quickly.
All due to their locking up as the hammer falls, whereas the S&W locked up before hammer fall. ....
The Colt should lock up the cylinder before the hammer begins to drop , that on a properly timed action.
So many of the old style V-main spring style DA Colts have timeing problems.
It is so common for them in DA function to have the cylinder click around the last rotational degree to LockUp and do so just as the hammer is released, that it is often assumed, and even has been written that this is the correct way the mechanism is designed to work.
Not so.
The cylinder locks up from rotation before the hammer falls if everything is timed right.
,,one reason not many people will work on the old style DA's is that they are just plain not as easy to make them all good again.
...and stretching the Hand is not the cure-all for everything that's wrong in a Colt DA revolver timeing troubles.
Another is the lack of usable parts for repair. Though there have been some repro parts made available in recent yrs of the usual problem children which can be helpful. Fitting them correctly still takes knowledge and skill that doesn't seem to be as widespead as that in repairing the S&W's.
I did work for a shop in the 70's and early 80's that was the armorer service for 2 Town PD's that issued Colt OP's and PPSpecials at the time.
One dept had the PPSpec 4" 38spc exclusively as their main issue weapon.
Det and other plainclothes wear in both PD's, the S&W 36, 37 or 60 was in use.
You are correct if you assume there were lots of repairs to the Colts needed to 'keep them going'. The S&W's used were usually just a Clean & Check type of situation on a rountine schedule of maint.
Many of the Colt revolvers had already seen better days and should have been retired from PD service for sure.
Inspite of having original Colt Factory armorers parts 'kits' (kits is a misleading term as the wooden chest(s) assemblage of parts, repair jigs, tools and fixtures for each was a bench full), and an excellent knowledge of what and how to do the work, the guns were never what most would lable as dependable SD weapons.
Refinishing the guns to make them look good got to be the main point of sending them in. Gotta look good ya know!
..and that process is an entirely 'nother story..