Here are some of my Blue Dot loads. I haven't worked with Blue Dot much, but here's what I have, velocity is the average:
(Glock 35 w/6" KKM G24 barrel)
180gr Montana Gold JHP, 9.0gr Blue Dot @ 1.100": 1,201 fps (nicely consistent...13 fps extreme spread)
200gr Nosler JHP, 8.5gr Blue Dot @ 1.130": 1,165 fps
Alliant shows 8.9gr for a 180gr Gold Dot, I use the shorter 180gr MG JHP which is why my OAL is shorter as I want to get the base of the bullet around the same spot. I had loaded it longer to 1.125 but it was less consistent and averaged 1,177 fps.
FWIW, I get pretty much the same performance (1200 fps) using 6.5gr Unique or 7.2gr Power Pistol. Longshot does well, averaging over 1,300 fps with a 180gr bullet in a 6" barrel.