I've put TiteGroup and Clays on the Big List, and will try each in turn this year with the three pistol calibers I shoot. Thanks.
Please consider refraining from using straight-up Clays in .40, if that's one of your calibers....its not recommended per the Hodgdon manual.
UNIVERSAL Clays is supposedly OK for .40 (per Hodgdon).
For .45, I have been using 4.2 grains of Clays (straight) pushing a 230 grn TMC, FMJ, etc (all coppered) at an OAL of 1.265 ( I think- it's just a TAD shorter than a factory) and Federal primers in both my 5" SW 625 revo and my 5" SW 745 IPSC, as well as my brother's SW 1911 5".
Shoots really, really soft, and will make IPSC major all day (not very temperature sensitive). A little smoky, but VERY easy to clean, wipes right off with minimal solvent.
Clays is also quite voluminous- if you double charge it, you'll know because the powder will be at or over the top of the casemouth. Very easy to look in and see that you actually HAVE powder in there, too....
Don't forget to start low and work your way up....but this goes right around 750-775 fps. in my revolver, a little faster in the semis.