) at a shooting range located in or on premises owned or occupied by a duly incorporated organization organized for conservation purposes or to foster proficiency in firearms and the firearm is, at all times, kept within the premises of the shooting range;
Is a range by definition an organization duly incorporated to foster proficiency in firearms? Or would a for-profit range not qualify? And what is "at all times"? You and I, and probably mots reasonable people would consider that as "for the duration of the transfer". An activist prosecutor could determine that to literally be "At all times". Meaning you have to leave it behind. And if this duly incorporated range is not a Federal Firearms Licensee you've now broken the law with an illegal transfer.