There are all sorts of specialty shells. Most of what you refer to are for military and police use. Rubber shot, flares, dispersion gas, projectile gas, tracers, poppers, door bangers (to known doors off hinges), blanks. I'm waiting for the development of motion detecting shells that hone in on moving orange flying objects (that on I can use).
Look up some of the different shell manufacturer's web sites and you will find what it currently produced.
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