The Vulkar has the second longest shot combo reset time of the sniper rifles at 5 seconds, thus it can maintain its shot combo after reloading.
It needs only 2 shots to initiate the shot combo counter's 1.5x damage bonus, allowing it to attain 2.0x bonus damage if all rounds of its magazine hit.
The Vulkar, alongside the Snipetron, has the smallest minimum zoom magnification of the sniper rifles, with its minimum zoom having only 2.5x magnification. This makes the Vulkar more effective at shooting at closer range than other sniper rifles.
Use a short-ranged sidearm to compensate for closer targets.
Try to aim for the head or other vulnerable points only, take your time. Spraying and praying with this weapon does not work well, as with all snipers.
Adding a maxed rank Wildfire will give the Vulkar 1 extra bullet, while a maxed rank Magazine Warp will add 2 extra shots. A maxed Tainted Mag will add 4 shots, and all of these mods will total up in a magazine capacity of 13.
Rupture or Crash Course are the most effective physical mods to use, as they increase Vulkar's already decent Invalid damage further. In combination they will grant a total of +150% Invalid damage.
Heavy Caliber can be used on the Vulkar with little noticeable effect on its long-range accuracy, as its slow rate of fire ensures that its shots will always land on its crosshair. Heavy Caliber will affect the spread of additional bullets created by Split Chamber however.
It seems the Vulkar is based-off the name "Vulcan", the god of fire, the forge and the volcanoes in Roman mythology.
Ballistas, the Grineer sniper units that use this weapon.