I have tried 8.5 grains of Bluedot with a 110 JSP in a Ruger Blackhawk.
This load is listed in a load sheet from Alliant and was safe in my gun.
However Bluedot still produces a rather large muzzle flash.
Velocities ran 1144, 1251, 1254, 1210 fps which was about 100 fps slower
than the factory load.
With Unique 5.5 grains and a 110 JSP velocities were 1058,956,1019,1022,1061 fps.
After scoping the gun it was found that most loads in my gun were not very accurate and was a waste of jacketed bullets to continue.
I tried cast bullets in the 110 grain range and found accurate loads to be with 4.5 to 5 grains of Unique.
Small rifle primers gave the smallest groups favoring Remingtons.
Small pistol primers can be used as well.
Beware of data with Unique that goes beyond 6 grains as pressure raises dramatically and is not safe to use.
As far as jacketed bullets the Speer 100 grain plinker with 6 grains of Unique was the most accurate load that was tried prior to switching to cast loads.
If you want to use AA powder and experiment AA 7 produces almost no flash in my .357 and would be a good choice in a .30 carbine Blackhawk load.
My only other experiment was with a 110 JSP and 14.5 grains of IMR 4198.
While velocity was low just under 1000 fps the target group was tight.
That's all I have. Seems my gun likes loads that run a little slower.
Save some money and shoot cast bullets in your Ruger.
If not then go with the plinker bullet from Speer.
Bruce
FWIW
The plinker bullet clocked at 1142 fps with 5.5 grains of Unique.
Apparently I only checked one round for velocity but it gives you some idea of its potential.