In particular Fackler&#x27;s works that are available on the net, but I&#x27;m under the impression that&#x27;s general knowledge, plus the basic physics.<p>Now that I think about it I&#x27;m not sure what the official story is with expanding bullets, which are not under discussion here, but I can&#x27;t see how adding drag to the lighter end of the bullet will change this.  And of course it&#x27;ll depend on profile, I&#x27;m talking about spitzer rifle bullets, a putative fully jacketed wadcutter, a simple cylinder, wouldn&#x27;t have any reason to swap ends.