I never stated that it is impossible to have a Hollywood quiet firearm, nor did I cherry pick anything. I merely highlighted a tradeoff that calls the efficacy of "Hollywood quiet" firearms into question. For subsonic ammo, quietness is not affected by bullet size, it's affected by the amount of exploded powder. And it just so happens that your muzzle energy is also affected by the same thing. Your subsonic .45 and 7.62x35 will be louder than your subsonic .22 by roughly the same proportion that they are deadlier.