Sometimes, but also because the ranking system is bullstuff. I won 10 games straight and didn't rank up.
Another thing is I'm getting so loving frustrated with this random 1st shot bullstuff, this isn't loving cod.
Whilst the first shot RNG stuff is really really really loving stupid, the only ranges it really matters at is pit to A site on dust2 ranges, which you really shouldn't be rifling down anyway. At almost every other range the spread is so limited you are guaranteed headshots.
Also the ranking system doesnt factor if you won or not as a way to determine your rank 100%, you can get boosted by doing that (and my friends ended up boosting a really stuff guy to GN1 by accident) but if you deserve the rank up you will get it.