I can't seem to find any data for using Claydot powder for handgun loads. Does anyone have a source for information? There are recipes published using Hodgdon Clays, I wonder if they are interchangeable for handgun? Thanks.
I am using Clay Dot in several pistol loads right now for the same reasons you are considering it - I can't get Clays.
Also like you, I couldn't find any loading data so I just used my favorite loadings using CLAYS data. I tend to load mid vel target ammo in .38 special and .45 acp and as far as I can tell the Clay dot performs just like CLAYS. But I will be the first to admit that I have no way of actually measuring chamber pressure or other key parameters so if you do as I am doing you will be assuming all the risks just like I am.
FWIW, I have loaded and fired several thousand of such rounds without incident or any indications that there may be a pressure problem.