If you're talking rifle, the original 40-grain bullet in .220 Swift behaved that way. And I used to swage 80-grain .32-20 flat-nosed bullets to .308, ahead of 55 grains of 3031 in my .06--it was a little rough on housecats and jackrabbits.
Pistols? Hmm. A frangible material. Real brittle, to disintegrate at low speeds. If you hit a person, it would probably behave similarly to a Glaser. Dunno. The idea rings a bell, but I don't remember where.
An interesting "In the house" load a guy wrote about some years back was a .44 Mag loaded with 1/2" lengths of 1/16" or 3/32" welding rod, and the interstices filled with #9 or #8 shot. All held in place with gas checks. His testing indicated horrible results on a whole chicken but it would not penetrate two layers of sheetrock. Don't upset the next-door apartment-dwellers that way.
Try a search engine on "frangible bullets"?
Best luck :-)
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