Occasionally I experience if I'm trying to shoot leaning out from a tree or if I'm prone I "hit" either the tree or ground (impact of dust appears) when I'm clearly not shooting at them. Mosin, M4, and SKS seem to be the guns I keep having the issue with, however, if someone is shooting at me or if I'm shooting at someone leaning out the hit connects with the player not the ground and or tree. I've tried to replicate it with the Magnum, but it has worked properly for me thus far. I did have a single instance that after exiting prone and going into crouch I was still "hitting" the ground.