1.6 grains of Bullseye ,700x. 1.7 grains of titegroup and N320. 1.8 grains of Unique. 2.2 grains of SR-7625. 2.8 grains of Acc #5 and 2.6 grains of True Blue are max loads in my Lyman 4th edition Cast handbook.
They caution that these loads are only for solid frame revolvers but if you back them off 10% you should have no problems.
That is what I did and have no problems in my Webleys and Enfields.
Be careful on some of the sites I have seen people claim to load 3.0 grains of Unique which I think would be to much for a top break