had this lots.
idk if it's a range thing, would be nice to see a range to target along with all the other info we now get from scoping.
my KD is kitten because of this, and I've practically stopped playing.

This was a problem in the last build too, the reason that snipers tend to notice more is because they use single shot weapons. It does happen to other weapon types too but it's a lot harder to spot.

I don't feel like this is a bug - a shot of many hunders of meters is suppost to be difficult. Just because you think you have a perfect shot doesn't mean it's going to hit. Just because you have a red dot doesn't mean it's going to hit. A few times I've shot someone at a distance with the red dot turned blue as I pull the trigger, but got a hit anyway.

I've seen this happen, for several builds now.

The core result of this is because your shots actually clip the rocks that you are sitting beside, or the rocks your enemy is sitting beside. What do I mean by that? Well the "Body" of a rock actually extends a slight distance beyond the edge of the visual, about a hands width or so if your character was measuring, and if you fire into this, your Playstatoin goes "oh that was a clean shot" so it plays the shield animation, but the server goes, "Nope, that hit the edge of the rock you were hiding behind." So when the other guy turns to shoot you, your head is sticking up beyond the edge of the invisible rock boundary and you get hit.

The only remedy for this is to move out of your hiding spot a tiny bit before firing.
Also of note, sometimes the enemy's rock can block your bullets from hitting him, in that case you have to re position your shot to hit someplace else that looks exposed.