Is Freedom Munitions Hush Ammo worth it? In this video, we test 300 Blackout 220 grain subsonic Hush ammo and compare it directly to 200 grain S&B (Sellier & Bellot) to see if it’s a good budget option for suppressed shooting. 300 Blackout isn’t cheap — so finding reliable, affordable subsonic ammo for plinking can feel impossible. Today, we’re running both rounds through a 10.5" 300 Blackout build with a Gemtech Lunar 9 suppressor to test. Both rounds are subsonic and safe to run through a 9mm suppressor in this setup. The question is simple: Is Hush ammo actually worth buying, or should you stick with S&B?