Well, if we really want to break it down (symantically or otherwise LOL):
...trying to tell us that the bullet does not come out of the barrel in a straight line. ...about how the bullet actually rises up at first.
As soon as the bullet leaves the barrel it starts "falling" in relation to the plane of the barrel. The rise is in relation to LOS which has no physical bearing on the bullet's path what so ever. Just being a little anal here...LOL! But it seems this thread was going that way any how.