So who has them? Currently Halifax Police has just over 500 members according to their website. If we assume back in the day the 3 police forces (Halifax, Bedford and Dartmouth) all sold their guns and had roughly 500 members (with a few spare guns I assume) - where are they all? I haven't seen a member on this site say they have one or have seen one. Just "I know a guy..." type of stories.
There are over 15,000 RCMP members, ever more Toronto police, then you have the OPP and a ton of other cities across the country have probably another 25,000+ members. So lets say 50,000 police across Canada (just to pick a number). Where are all of the guns that were sold off?
This isn't a case of you and I having different opinions - this is simply a case of something that isn't possible.
To be clear - I am saying that it is not possible for that many revolvers to be out there and none of these things have happened:
1) no one on this site has one
2) If you search on CGN you will not find a case of there ever having been a ex-police pistol for sale
3) one was never used in a crime - if it was I am totally confident the news (who I think we all agree are anti handgun) would be all over that!
When you break it down you realize that there is no way it can have happened.
It's usually difficult to prove something didn't happen (or doesn't exist - cougars), but in this case it's easy. It's impossible for that many guns to be out there and no one reading this has ever personally seen one.
You are free to keep believing if you want - people believe all kinds of things that are impossible (the earth is flat, vaccines cause autism, big pharma is hiding a cure to cancer, big oil is hiding a car the runs on water, etc etc etc) - but that doesn't change things other than you'll think I'm an A-hole.

Rob