If you can find them try the Hornady Custom 38 SPCL Critical Defense cartridges.
Can I just throw this out there? I just purchases a Ruger SR 22. I just realized the slide release won’t release the slide until you pull back on the slide as you push down the release lever. It will if you push very hard. This sucks! On my Mark III and SDe slams just push the slide release and the slide slams forward stripping a round out of the mag and clambering it. Nothing in the instructions state this. I called customer service and they told me you must pull the slide back as you push the slide release. Is there an aftermarket correction this issue?