I've never seen a published load for Clays in .380 ACP. As you know and depending on which list you read, Clays is the fastest or one of the fastest powders there is. It was specifically designed for moderate loads in 12 Ga shotshells, not necessarily for handgun cartridges.
I use Universal Clays in my .380 target loads. Working up from the published min of 3.6 grains (Speer #13 & Hodgdon's website) with a 95 grain FMJ, I arrived at 4.0 grains as a good load without pushing the pressure envelope.
I realize that doesn't help with your quest for a Clays load. Personally, I wouldn't hesitate to work up a few loads of Clays starting with the minimums published by Lyman for Bullseye for the bullet weight of your choice (it'll be around 2.0 gr for 90/95 grain bullets). Be especially mindful of double charging a case; it's easy to do with such small loads.
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