"If I were injured by a gun stolen from a private house then I'd be inclined to file suit against the original owner myself..."

Good luck with that.

I had a registered pistol stolen from my house. I reported it to the DPD and made out a police report. I imagine that it probably has been used in a crime [[pretty likely because stolen by a neighbor who landed back in prison subsequently).

I never heard another word. I have no more responsibility for a crime committed with a stolen gun than I have if someone used my stolen tv to bop someone or electrocute someone.