You have to do like a perfect headshot with the m3 to get up to 600 (well, if you wanna do it with one shot). You could also do two well-placed headshots. I’ve gotten up to 700. I used to use the pump all the time. It was my primary weapon for about 2-3 years and then I started playing in Appstate and switched back to rifles. ;P
Double headshot with the awp! I peeked out and popped two guys who were lined up.
Four headshots (the 206 dmg one was through a wall).
I was playing as “I LOVE YOU COLT!” Check out the dmg on Butt Mart.
I have another one somewhere where I did like 723, I think.
Another one from my pumping days.