The double-barreled Tigris shotgun fires two bursts in rapid succession, easily taking down the toughest prey.
The Tigris is a Tenno double-barrel shotgun, shown in the Update 11.0 highlight video. This weapon has a unique firing mechanism, in that pressing and holding the fire button will fire one shell, while releasing the fire button will also fire a shell; tapping the attack button will fire two shells in rapid succession, thus making this weapon flexible against heavy and light enemies.
Even if the weapon fires only one round, the reload animation is shown to eject two rounds, but will still draw one round from the ammo pool.
The Tigris received an increase of 29% base damage at Update 11.3, boosting its damage well above even the Strun Wraith. Update 17.0 further increased the Tigris' base damage to more than double its previous values.
The listed damage is actually the total of all the pellets' damage value. The actual damage per pellet is 26.25 impact, 26.25 puncture, and 210 slash.
The listed Status Chance is the base chance per shot that at least one pellet will proc a status. The actual base Status Chance per pellet is ~5.59%.
The Tigris has a high chance of cutting corpses into pieces, similar to Slash-focused melee weapons. This makes the Tigris a prime candidate for a DesecratingNekros to bring along, as the game considers the cut corpses as separate entities, essentially giving multiple corpses to desecrate from a single enemy and thus yielding more chances to create more drops.
Using the Tigris requires a very different mindset from other shotguns; whereas the other shotguns all allow quick follow-ups, the double-barrel Tigris has to pick and choose its shots more carefully. Similarly, the Tigris is not focused towards damage per second, instead focusing entirely on burst damage. Bear this in mind when using it and it quickly will become a valuable asset.
Whilst the Tigris normally fires both shots in rapid succession, holding down the attack button will fire only the first shot; releasing left-click will then fire the other. This can be used to manage and place shots more efficiently.
Due to its unique firing mode you can reload straight after firing the first round, saving ammo when up against weak solo enemies.
Performing actions that would normally cancel charge attacks (ex. rolling, ledge grabs etc.) when the first shot has been expended will lock the second shot in place, preventing it from firing when the attack button is released; the shot will only be triggered upon tapping the attack button again. This can be used to conserve the second shot without constantly holding down the attack button.
Due to the weapon's low magazine size and tight spread, consider using Seeking Force and/or Seeking Fury in order to deal with large groups more effectively.
The Tigris' high base damage makes it effective against lightly armored/shielded enemies such as the Infested. When fighting heavily armored/shielded enemies, consider using Corrosive and Magnetic respectively to take advantage of the Tigris' high status chance.
Whilst the Tigris is powerful and very accurate, its low pellet count means that even one projectile missing can significantly reduce the firepower of its shots. Hell's Chamber is absolutely essential for maximizing the Tigris' firepower.
As the Tigris has an extremely low magazine capacity, upgrades such as Ammo Stock at Rank 2 (+30%) will raise capacity to 3. For a 4-round magazine combine Ammo Stock at Rank 5 (+60%) and a Burdened Magazine at Rank 1 (+20% Capacity, -6% Reload). Since both of these mods max at 60% with a combined total of 120%, the Tigris cannot exceed a 4-round magazine capacity.
When having 3 shells per magazine however, the first 2 will fire normally but there will be a short delay before the extra one can be fired. This delay can be decreased by Shotgun Spazz, although this will have no effect to the already very fast burst of the first 2 shots.
With a magazine size of 4, you can fire 2 bursts, with a short delay between them.
Using burst-cancelling (e.g. rolling, ledge-grabs) described above will cause the weapon to fire the another two-shot burst pattern when fired again, if it has a capacity of 3 or 4. This allows for a much wider range of firing patterns (e.g. fire one, roll-cancel, fire two, fire one).
Reloading manually right after emptying the magazine skips the after-firing delay which is very useful for a 2-shot build.