Alright EA, explain!

I was just on the new map on breakthrough. I was using the M-1014 shotgun with slugs. I got behind them and pumped 4 rounds into 4 players backs at <10M and NOT ONE KILL! They turn on me and I'm instantly dead. WHAT THE HELL IS THIS GARBAGE!? I got 4 hit markers... why was there no kills? Other times I can 1 shot someone at further ranges and here NOT ONE KILL!

I want you to explain.... Is there Skill based balance mechanics in your game? Is this "hit registration?" Shouldn't be, I got hit markers! Is this a latency thing? I don't know who I hit to check their ping, but if I got hit markers @ <10M with that shotgun with slugs WHY, did I not get kills? I have a GIG connection on fiber, my latency is usually <20ms. That does not make up for the fact this is a 1 shot weapon at close range, except this time!

I want an answer! This is why players are quitting! They shoot people and nothing happens. Hits that should be kills are not! If this is some kind of logic in the game, it is the most idiotic thing in a so called "competitive FPS!"

FYI I am on PC, over  700hrs playtime. I have seen this issue since launch, especially with shotguns. However, not like this time! That map is perfect for shotgun play and I can't even get 4 point blank IN THE BACK kills! I am beyond mad! You could not serve up a more perfect opportunity!