https://www.gamespot.com/articles/fortnite-battle-royale-shooting-test-is-the-new-li/1100-6456573/

Fortnite's recent Battle Royale mode, Sniper Shootout, may now be over, but a new limited-time event has begun on PS4, Xbox One, and PC. Epic Games has kicked off Shooting Test #1 on all platforms, though this limited-time mode is a little different from previous ones.

Rather than introducing a unique game type, as was the case with the recent Sniper Shootout and 50 vs. 50 events, Shooting Test #1 serves as way for Epic to test a new shooting model for Battle Royale. The general experience is largely the same as the game's current build, but Epic has adjusted some mechanics, most notably giving weapons first-shot accuracy. Additionally, the developer has reduced headshot critical hits and introduced damage fall-off to certain guns.