How about Power Pistol? BE-86?
I’ve used mainly Alliant powders but lookin’ hard at W231.
I have used Winchester 231/HP-38 in 9mm Luger, 9x23 Winchester, .38 Special, .44 Special, .45 Colt, and .45 ACP. It’s is great for middle of the road loads. Despite small charges, it is not position sensitive. (I’ve actually tested this.) However, if I want a higher velocity .45 ACP or .4r Special, I reach for Power Pistol. The 9x23 Winchester loads were just for practice ammo. For 9mm Luger I switched to AA #7 a long time ago … so long I don’t remember exactly why but I’m guessing it was accuracy. (I do have notes somewhere that would tell me, but I stopped bothering to reload 9mm.)
The only powder I have more of than W-231 is Hodgdon 4895, and that’s because rifle cartridges use so much more powder.