Barrage Effectiveness: Because of the Barrage's spread-out shots, not all of its 15 rockets may hit a given target. You may also intentionally fire a Barrage off to the side to hit another building. So, you may change the Barrage effectiveness with the last input. Generally, 14 out of 15 rockets (93.33%) will hit a 3x3 or 4x4 building if you aim at the center of it, and all 15 rockets will generally hit a 5x5 or larger building if you aim at the center of it.. Please Note: Fandom does not allow calculators to run on the mobile version of the site. Click here to use the mobile-friendly version of this tool on Pixel Crux . The HYPER BARRAGE makes a return RIGHT BEFORE the day of the MEGA CRAB! Tune in tomorrow to see coverage of the new update live in boom beach with gameplay .