People were always interested in this so I figured I'd post it.
seta sensitivity "8"
seta cl_mouseAccel "0.14"
seta cl_mouseAccelPower "2"
seta cl_mouseSensCap "18"
seta cl_mouseAccelOffset "0"
seta m_cpi "" // <-- your DPI here
seta m_yaw "0.022"
seta m_pitch "0.022"
seta m_filter "1"
seta in_mouse "2"
(this assumes Logitech SetPoint drivers [sensitivity: 2] is scaling DPI to little less than 310 which is probably not exact but VERY close)

Play with it for a while. You will hit a lot.

PS You might want to use cg_trueLightning "0.9"