Keep it as 3 shot then.
And like P!nk and others said: It's ridicilous that if you shoot straight at someone the enemy doesn't die.
f.e. Yesterday I played on overgrown, there was a player at approximately 60 meters from me. I shot straight at his head. First bullets didn't collide, I was sure I hit him, then after like 5 bullets i got hits and thus the kill.
Other example (still at overgrown): I was in the wooden building ride accros grandma's house. Pink was in the attic looking through the small window, aiming at me. When I saw her I shot her but I got no hits (where there should be hits), since I didn't got the kill, I hid behind the wall. Got no hits. She duck down, and as she duck down she fired a few rounds. And those few rounds, killed me through a brick wall and through the wooden wall! And she was sure that those last bullets shouldn't hit me! Not only the fact that the bullets wend through 2 walls, she didn't hit me.
And this happened many times. I aim at the body; don't get the kill. I miss the target; got the kill. This is really strange and takes out the fun for me.
Don't get me wrong. There a lot of good things too about the mod. But in my opinion the weapons were great as they were.