Tsunami is a Legendary Hydraulic Fortnite Weapon in Conserve the world. It employs Medium Bullets. The tsunami was obtainable as featured loot in Storm Llamas bought from the Vindertech Keep throughout the Mutant Storms occasion. This Legendary Hydraulic Sniper does slightly significantly less injury as its counterparts but includes a significant effect at lengthy assortment which offers it enough of a niche to create it to this list. The Tsunami is indeed an accurate semi-auto rifle that offers superior injury and higher knockback.

 
Tsunami Crafting Requirements: 15 Blast Powder, 30 Rusty Mechanical Parts, 1 Active Powercell, 11 Copper Ore

Tsunami Rarity: Legendary

Tsunami DPS: 314.2

Why Choose Tsunami
The Tsunami is one of those weapons where it could have no rolls at all, and it would be a good weapon. It is more than capable of 1hko-ing lobbers (which, is honestly the most significant threat at a range) and it has an insane amount of impact (at t5, 50/50 it has over 5k implications per shot).
It takes three headshots to 'stagger' a smasher at p100
It's guaranteed to 'stagger' blasters on every shot
You can shoot husky husks/exploders in the head to make them backflip: and you can keep doing this even when they're on the ground before recovering from rolling them away from important things.
The weapon in and of itself (if it had no roles) would generally have enough damage to 1HKO anything you'd (usually) need to use a sniper against, except mist monsters and husky husks. So if you're going to shoot things like lobbers in the head they'd die anyway (whether you had the damage boost or not). If you're Shooting stuff like exploders (and making them roll back over and over) you'll get the %damage conditional to trigger (but only as long as you keep firing on them before they stand up, and from the 2nd shot onwards). It's highly unlikely you'd need more than 2-3 (headshots) on a target anyway.

Zapotron vs. tsunami
Both are gimmick guns tsunami is the highest single target DPS gun in game hands down. Fire rate huge clips it owns mist monsters hower you have to hold wait then unleash torment of bullets. But general usage that "wait" prevents controlled burst.
However, Zapatron is gimmicky as heck the saving grace that makes it useful is an ability to charge up shots from behind cover and pop out and devastate. But the slow time between shots and reloading makes it worst gun for general combat. It is one of higher burst damage guns BUT due to penalty's of missing can be one of lowest DPS guns without near-perfect accuracy.
Ignoring the bonuses for a moment, have you fired the Zapotron before? I'd personally take any gun over it because of how useless it feels.
As far as the bonuses go, your Zap has the better set. All of that reload speed on Tsunami is useless.
That leaves you with +30% dmg and +13.3% Headshot dmg.
vs
+15%dmg, +26.7% Headshot dmg, and then the +14% crit and -12% durability decay.
The crit chance, double headshot dmg, and crafting the gun 12% less often make up for the 15% dmg you lose out on. The -30% recoil is pointless on a Zap, unfortunately.