PUBG: BATTLEGROUNDS
37 Achievements
1,000
150-200h
Marksman Master
Kill 100 players with an assault rifle and/or a sniper rifle from over 100 meters away.
50
3.21%
How to unlock the Marksman Master achievement in PUBG: BATTLEGROUNDS - Definitive Guide
The only assault rifle's that appear to track kills towards this achievement are the M16A4 and the M416. The distance (100 meters away) is not required, feel free to kill enemies from any range; what you MUST do - to progress this achievement - is make sure you are aiming down the IRON SIGHT. I have tried aiming with a red dot sight on numerous occasions and not once has it tracked the kill. 6x scopes appear to work on occasion but they are not consistent. At this time the only sure fire way to progress this achievement is using the weapons iron sights.
I have not been able to test every sniper rifle but can confirm that the VSS, Winchester, Mini 14, and M24 do not count towards this achievement, even from a distance greater than 100 meters.
Note: As of 06/21/19 it sounds like this achievement still tracks incorrectly. I want to reemphasize that distance does NOT track correctly and iron sights appear to still be your best bet - thanks andresfgp13 for reconfirming that. I wanted to clarify that I no longer play PUBG and am unaware of recent updates/changes but wanted to leave this solution up because there are helpful comments below.
100 meters is a fair way away in PUBg but 4x, 6x, 8x and 15x scopes will obviously make this easier. If your enemy is moving and/or unaware or you, take the extra 1/2 a second to aim for the head. Aim ahead of running enemies and keep bullet drop in mind also.
Note: The "Marksman Master" achievement is currently bugged as the QBZ, AK47, M16A4, M416, VSS Vintorez, and QBU are confirmed to track towards this achievement at LESS than 100 meters; Take advantage of this before it's patched. Those are the confirmed guns that work at less than 100 meters. I imagine any Assault Rifle or Sniper class weapon will track towards this achievement.
The best way to grind this is with bots, playing Squad of 1.
Use SRs that don't need to reload after each bullet fired. Also keep an eye for help crates. They often have the AWM wich use Magnum bullets and destroy people like they are nothing.
Doing this alongside Trigonometry Novice will save you time.
In case you're wondering, each square in the mini map has 100m².