Still fun to practice on the regular maps though. At the moment you have to have some major skill to take people out like that in the dlc maps with the hunting rifle. I've gotten better and I can do good on the dlc with the HR, but it's more of a hit and miss for me.
I also used the old maps ot practise my HR headshots. No point in even using a weapon you are no good with against teams of players all just using the SAR. Gotta crawl before you can walk and walk before you can run.
As for the video its nice. Some decent drag shots but since its a montage you are always scoped in and we really don't get to see how well your aim really is. You could of hard scoped for 2-3 minutes before each shot for all we know. :/