There have been multiple threads on the SASSwire about this very topic. It makes for interesting reading if you want to go find some of them. Here is the abridged version:
Coyote Cap released load data that consists of:
1. .45 long colt case
2. Federal Primer
3. a small amount of Clays powder
4. Quaker Quick Grits to the bell (bottom of the flare) in other words almost to the top
5. 200 grain lead round nose flat point bullet
On the SASSwire, many will praise this load saying:
"This load results in great accuracy, a clean gun, clean brass, cool brass."
Others will denounce it:
"This load is unsafe, untested, uncowboy, unpublished, sure to damage your gun and kill innocent bystanders, a liability risk, etc."
I confess, I use the load and love it. I haven't found anything better. I tried it in desperation because the 92 rifle I was using at the time had such an oversized chamber that even heavy loads of Unique and a 250 grain bullet didn't seal, resulting in blowback. This made the gun so dirty (with carbon) that after 6 stages it wouldn't cycle reliably. Cap's "Clays and Grits" load fixed this problem I never had to clean the gun. The brass really does eject cool to the touch and clean.
You will occasionally find a fine dusty powder residue at the end of the barrel. Not a problem for me. This load can smell funny. This load does require an extra step in loading (putting the grits in). For that reason I have tried other loads including Clays in a Schoefield case. The results have not been satisfactory yet. I'm going to try the new "Trail Boss" powder when it comes around to see if it will work. Until then, I'll keep using the grits load unless it is banned.