Frangible slubs?
https://www.ballisticproducts.com/CTX-Frangible-Slug-12ga-325gr-25_box/productinfo/336CTX12/
I have some in my safe right now.
Although, heh heh, they are nothing compared to the lung extracting carnage of the common 9mm round.
BTW I’m not getting paid by them or anything, but I’ve found Ballistic Products to be a decent company.