1. I want to set the record straight on using high DPI settings on your mouse. You can see my write up on this at http://steamproxy.net/groups/Gunslinging_Gladiators/discussions/2/846961716279722695/

2. The following is my "headshot" cross hair. It's a box that you put the person's head in, and shoot. It's the only cross hair that really seems to increase the number of headshots I get.
http://steamproxy.net/groups/Gunslinging_Gladiators/discussions/2/792923684177019083/

3. If you want to be more efficient at overwatch, you really need to follow this guide.
http://steamproxy.net/groups/Gunslinging_Gladiators/discussions/2/792923684176965269/

Here's a really cool 5k round I did. http://youtu.be/lGzO6ItU9FA


Here's a script I made to reduce voice reception volume to 20%. It's a toggle based script so that you can use a single key, or mouse button, to toggle it.

alias voice_t "voiceon"
alias voiceon "alias voice_t voiceoff; voice_scale 1; say_team voiceon"
alias voiceoff "alias voice_t voiceon; voice_scale 0.2; say_team voiceoff"
bind "\" "voice_t"

You can view my writeup on learning to get headshots over at stack exchange. http://gaming.stackexchange.com/questions/122617/how-can-i-get-more-headshots/129524#129524


A couple of useful scripts...
// voice enable toggle
voice_enable 1;
alias voice_t "voiceoff"
alias voiceon "alias voice_t voiceoff; say_team "voice_enable 1"; voice_enable 1;"
alias voiceoff "alias voice_t voiceon; say_team "voice_enable 0"; voice_enable 0;"
bind "\" "voice_t"

// radar toggle
cl_radar_scale 1;
alias radar_t "radarlow"
alias radarhigh "alias radar_t radarlow; cl_radar_scale .95;"
alias radarlow "alias radar_t radarhigh; cl_radar_scale 0.4;"
bind "6" "radar_t"