&gt; but also because its less lethal<p>Source? The reason I&#x27;ve always gotten is that it causes the bullet to &quot;tumble&quot;[0] once it enters the body which causes even greater damage to the body than simply passing through, which results in a greater lethality.<p>[0] - <a href="http:&#x2F;&#x2F;www.futurefirepower.com&#x2F;myths-about-the-nato-556-cartridge" rel="nofollow">http:&#x2F;&#x2F;www.futurefirepower.com&#x2F;myths-about-the-nato-556-cart...</a>