The settings i use are pretty close to the kinzu hardware accel imo. But i haven't used a kinzu for a long time so anyone with a kinzu care to comment?

I wouldn't call it a "bug" but its certainly not what most people would consider normal use of accel. Also you can probably use any non-zero cl_mouseaccel.

Regarding Kinzu accel, I got a few V1s a while back, just recently bothered to do some testing. Here's a preliminary test where I used a WMO as a reference to measure Kinzu V1's behaviour (both ~400cpi 1000Hz).

http://drok-radnik.com/junk/kinzuaccel_wmoref.png

Gives u a vague idea of what may be happening, but there are more things I need to take into account with my test method, and I don't want to wall-of-text too much until I get some more data.

Does the wmo have acceleration in the graph?

WHAT

What's not to get? ur sens will literally change to a different number when you hit the mouse speed that u set in cl_mouseacceloffset. I just made a tutorial which shows you how to do it considering no one in ql does it.

That's cool. It's not a bug though. It's unexpected, but everything's working properly. You can also set mouse accel to .5 to get a square root, for negative accel, etc.