Why do you keep beating this dead horse?
I keep telling you that very few CAS shooters shoot 32-20 in their pistols or rifles. I have been shooting CAS for 20 years and would have seen a lot more shooters shooting the cartridge than I have if it was the major reason loaded ammo, brass, and bullets are available now. I cannot recall seeing anybody shoot 32-20 in a CAS match in all that time. The great majority of CAS shooters shoot 38 Special or 45 Colt. Followed by some of the less common cartridges such as 44-40 or 38-40. And some are shooting a smattering of other cartridges.
The majority of 32-20 shooters are just like you. They get ahold of a revolver or rifle chambered for 32-20, and find some ammo for it on the shelf, and then because factory ammo is hard to find decide to start reloading the cartridge. Back before the ammo shortage started I would every once in a while see some 32-20 ammo on the shelf in the local Cabelas and would usually buy a couple of boxes. At that time there was tons of 38 Special ammo on the shelves, but Cabelas never had more than a few boxes of 32-20 in stock. Yes I asked. I bought a set of dies from RCBS to load 32-20, and a bunch of brass from Starline. Starline only sells brass in quantities of 500 or 1000, so I bought 500, and most of it is still in the box. And let me tell you I had the dickens of a time finding any bullets for 32-20. Finally found a box of five hundred 100 grain round nose flat point bullets, but I had to go to the largest gun room in New England to find them.
The most common chambering for the Colt Police Positive Special was 38 Special. In this photo my 32-20 Police Positive Special is in the center, perhaps you can make out the chambering on the barrel. On the far left is a little 22 Long Rifle Police Positive target model. The other three revolvers in the photo are all 38 Special Police Positive Specials.
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Colt developed the Positive Lock in 1905. It was a mechanism with a hammer block to prevent the revolver from firing unless the hammer had been pulled all the way back, either single action or double action. Colt made Police Positives in several different sizes. In this photo, the large revolver is a Colt Army Special, which eventually went under the name of Official Police. Directly below it is a Police Positive Special chambered for 38 Special. Below that are two small 32 caliber positive lock revolvers, the larger of the two is a Pocket Positive marked 32 Police Cartridge which is the same as 32 S&W Long. The smallest revolver in the photo is chambered for 32 Colt, which is a short 32 cartridge loaded with a heeled bullet. Nobody is producing 32 Colt ammo anymore that I am aware of.
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The next two photos show the hammer block inside a Colt Detective Special. The arrow points to the hammer block in both photos. In the first photo the hammer block is preventing the hammer from moving all the way forward. In the second photo the hammer has been pulled back to full cock and the hammer block has slid down in its groove so the hammer can fall all the way when the trigger is pulled. By the way, the Colt Detective Special is built on the same size frame as a Police Positive Special.
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Regarding Police use of 32 caliber revolvers, I have no data to back this up, but I suspect there were far more police revolvers being carried that were chambered for 32 S&W Long than 32-20. In 1896, while he was police commissioner of New York City, Theodore Roosevelt selected the Colt New Police revolver as the first standard issued revolver for NYPD officers.
Smith and Wesson developed the I frame revolvers specifically for the 32 S&W Long cartridge. The first of them was the 32 Hand Ejector or Model of 1896. This one shipped in 1899. The cartridges shown with it are 32 S&W Long on the left and 32 Colt New Police on the right. Basically the same cartridge.
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I frame Smiths were a bit smaller than a K frame Smith, so they were a bit more easily concealed. The revolver at the top of this next photo is a 38 Regulation Police, chambered for 38 S&W, not 38 Special. The 32 Regulation Police below it is chambered for 32 S&W Long. Notice the 38 is only a five shooter, the 32 is a six shooter. The I frame cylinder was not large enough for six 38 caliber cartridges.
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Then there was the K frame K-32 Masterpiece, also chambered for 32 S&W Long. This one shipped in 1954. Larger than an I frame S&W and not as easily concealed, I suspect not a whole lot of these were carried by police officers. By this time many police officers were carrying K frame 38 Special revolvers.
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