...I've never had a gun fail because of "dirty" powder...
I have. Bullseye, 45 ACP, custom Caspian 1911. Unique, 357 Magnum and 38 Special, 4" Security Six(es).
'Clean' 38 Special 'target load' choices include N310 and N320, WST, AA2, 700X, and Nitro 100. 700X and Nitro 100 meter fer-crap.
I mostly use W231, because while by no stretch 'clean', its fouling does NOT impair gun function.