I haven't found what you are looking for. The next best thing Ive found are these, soft lead so they expand and gas checked. Virtually no leading in a Smith 327 and a Ruger Blackhawk, mid range loads at around 1100 fps. You might want to try them, I like them.

https://rimrockbullets.com/xcart/g-ch-38-357-158-gr-swc-hp-per-100-in-a-plastic-ammo-box.html

Manny