If the 2 shot burst was almost instantanious, as fast as the game can go, then it would shoot again before the sniper recoiled. You shouldn't be able to go over the 10 sps limit with a sniper rifle, because it only has 10 or less shots in a clip.
I think this would be an amazing feature, mainly for the last two snipers since they arent as strong and take two hits anyway, this would be wonderful i think, you should really add this
yea but your not going to get a head shot every time you shoot so wouldnt it be nice to know you have that extra shot going rite behind the other so you know you get the kill and not get killed cause the one bullet didnt kill the other guy?