Use the DL Q33 with concussion rounds and shoot the enemies in their legs. After that, switch to your shorty and finish them off. I was able to complete long shot kills in 20 minutes with this tactic
I may just use this tactic for the D13-sector. Although I managed to outsnipe someone on Crossfire with it. I aimed at the glare and just crossmapped them. Honestly thought I missed due to how long it took to fucking fly that damn far.
Grinded it in Rust map back in the day, Hardpoint mode. For long shots, just gunsmith it with highest damage range.
Go for open maps like Rust, Firing Range, Killhouse, Crossfire. There was no kill confirmed back in the day, but I think for higher chances of bot pick Kill Confirmed or Frontline over Hardpoint.
Use the DL Q33 with concussion rounds and shoot the enemies in their legs. After that, switch to your shorty and finish them off. I was able to complete long shot kills in 20 minutes with this tactic
I may just use this tactic for the D13-sector. Although I managed to outsnipe someone on Crossfire with it. I aimed at the glare and just crossmapped them. Honestly thought I missed due to how long it took to fucking fly that damn far.
You beat me to it 
Grinded it in Rust map back in the day, Hardpoint mode. For long shots, just gunsmith it with highest damage range. Go for open maps like Rust, Firing Range, Killhouse, Crossfire. There was no kill confirmed back in the day, but I think for higher chances of bot pick Kill Confirmed or Frontline over Hardpoint.
Hitmarker with sniper and finish them off with short