I still do not know which type of ammo is more suited for individual situations. I mainly use the HE ammo because I have more of it. Most of the time I am aiming for the waterline unless the target is firing back at me. If I am under attack, I am aiming for the guns themselves. I have upgraded to RUB 1.45 and noticed that the gun is much less effective now.
If anyone has any thoughts on which ammo to use and when, replies are much appreciated.