Subsonic 308 Ammo: How Quiet is it?
This video tests the sound suppression of subsonic .308 Winchester ammunition compared to standard factory loads. Subsonic rounds, particularly handloads with 175gr match bullets, are significantly quieter, approaching airgun levels, though some variance suggests occasional near-supersonic performance. Standard supersonic rounds, while still hearing-safe with a suppressor, produce a distinct audible crack. The test also highlights the ballistic challenges of subsonic rounds at longer ranges (200 yards) due to significant drop, contrasting with the flatter trajectory of standard loads.









