https://www.gamespot.com/articles/fortnite-update-changes-guns-llamas-more-full-patc/1100-6459427/

Fortnite's 4.3 content update is now available, and it introduces a new item to Battle Royale called the Bouncer. That isn't the only change Epic has implemented, however; the developer has also made an assortment of weapon and building adjustments in an effort to "address a few top concerns" among players and further balance the game.

In terms of weapon changes, the Minigun's accuracy has been increased by 10%, while its damage against structures is now 30 (up from 25). Additionally, damage fall-off for Rifles, SMGs, Pistols, and LMGs against structures has been removed, and the structure explosion radius for C4s has been increased from 400 to 600.