I don't believe there is a bind that would stop mouse accel after a certain sensitivity.
Edit: Sorry. Didn't know about the thing Enigma typed in :P

edit: ok ;_;

m_customaccel_max

I thought customaccel max set the upper limit to how much accel can be added when you move your mouse really fast.

As for a setting that keeps accel from kicking in when you move your mouse at lower speeds (like cl_mouseacceloffset in quake) TF2 doesn't have that.

No, but you can fiddle with m_customaccel_exponent and m_customaccel_scale to get something at least along the lines of what you want.

afaik acceleration doesnt scale correctly or something along those lines when zoomed, so that might be part of your issue

the in-game custom accel is also FPS dependent, iirc

sensitivity "0.87"
m_filter "0"
m_rawinput "1"
m_customaccel "1"
m_customaccel_exponent "1"
m_customaccel_scale "0.033"
m_customaccel_max "1.12"

m_customaccel_scale is what I think you're looking for, although this is not a strict rule like customeraccel_max.
I use my base sensitivity as my sniper sensitivity.
m_customaccel "1" blows chunks for sniping (avoid at all costs)

p.s: zowie am using 1150 dpi :)

Got the same mouse. I will try those settings :)

I can maintain well over 120 fps at all times.

my settings are:
sensitivity "0.85"
m_customaccel 3
m_customaccel_exponent "1.015"
m_customaccel_scale - doesn't matter with m_customaccel 3

m_customaccel 3 doesn't fuck up your scoping.

this is bullshit, it only happens when you misconfigure your accel with setting m_customaccel 1 (which sets the TYPE of accel, not ENABLING "THE" accel -- 0 happens to be "none")

m_customaccel : 0 : , "a", "cl" : Custom mouse acceleration:
0: custom accelaration disabled
1: mouse_acceleration = min(m_customaccel_max, pow(raw_mouse_delta, m_customaccel_exponent) * m_customaccel_scale + sensitivity)
2: Same as 1, with but x and y sensitivity are scaled by m_pitch and m_yaw respectively.
3: mouse_acceleration = pow(raw_mouse_delta, m_customaccel_exponent - 1) * sensitivity
[3 is the only setting that works properly with tf2's sniper scope]

m_customaccel_exponent : 1 : , "a", "cl" : Mouse move is raised to this power before being scaled by scale factor.

m_customaccel_max : 0 : , "a", "cl" : Max mouse move scale factor, 0 for no limit

m_customaccel_scale : 0 : , "a", "cl" : Custom mouse acceleration value.

customaccel 1 is linear, quakelike accel

3 is exponential, like windows accel

Okay, so customaccel "1" is quake-like? That's the accel I'm used to and I just need a bit to make turns a bit easier.

I wish I could make heads or tails of this.

for reference what are the default accell settings?

I'm an idiot, so,
what is accel and how does it benefit you??

It makes your sensitivity higher the faster you move your mouse. Basically lets you shoot rockets out your ass.

m_customaccel 0
m_customaccel_scale 0.04
m_customaccel_max 0
m_customaccel_exponent 1

If you ever need to see defaults you can type the command without the number into console and hit enter and it will tell you the current setting and the default setting.

When you use the slider in the options menu it changes customaccel exponent. If you want so-called "quake like" accel you keep exponent at 1 and change customaccel_scale (while using m_customaccel 1).