When I was active 25 or 30 years ago, Winchester 231 was the powder I used, and all was good. I still have a few pounds I got this year (luck).
Now, due to the pandemic, politics or some conspiracy I don't know about. It is not available.
Now the good news: a lot of other "pistol powders" including Win 244 and some Vita, Imr, Hogdon
and others are available.
No offense to anybody who wrote all the great treatises on this site, but is there an

"equivalent" chart?
I don't mind having to adjust the loads a bit, but the info I can find is not enough for me to get started
toward an "equivalent" powder.