From the highlight videos it seems like the recoil thing is just as stupid as it was in 1.6, aim at the ground to hit someone's head. Wonder why they insist on keeping an ancient engine limitation as a "feature"
I don't play Go but Source and 1.6 have spray patterns and you can move the mouse to counter the movements. With a colt a good player can get a tight grouping even when spraying. The main skill people need to learn though is stopping and bursting at the head. If you are stationary the first shot will always hit where you aim with a rifle, so you tap the movement key the opposite of how you're moving so you stop instantly, aim at the head and start a burst. If you miss the headshot with the first shot the follow up shots might hit if you pull down and control the recoil. Then you can move while the gun's accuracy resets then stop and burst again
Up close its a bit different, but you still want to stop and aim at the head then burst or spray while controlling the recoil
This is kind of why the game is so popular. You have people trying to master stuff like I put, and alongside that you have people spraying and praying and hitting random headshots, or running and gunning with SMG's or shotguns. Its fun at all skill levels