180 grain Rainier HP over 7.5 grains of Unique from my stock G29 clocked at 1074 average. Out of a G20, that would probably be in the ballpark of 1150fps.
That 7.5 was near the starting load. At max published load, I should be near 1150 from my barrel with the Unique. I'm going to try some 2400 next time I go out, since I have some and Speer rates it better than Unique for the 10mm. My next purchase is going to be Longshot due to the recommendations here and elsewhere.