The "bad" text in I-594
(4) This section does not apply to:
(f) The temporary transfer of a firearm (i) between spouses or domestic partners; (ii) if the temporary transfer occurs, and the firearm is kept at all times, at an established shooting range authorized by the governing body of the jurisdiction in which such range is located; (iii) if the temporary transfer occurs and the transferee's possession of the firearm is exclusively at a lawful organized competition involving the use of a firearm, or while participating in or practicing for a performance by an organized group that uses firearms as a part of the performance; (iv) to a person who is under eighteen years of age for lawful hunting, sporting, or educational purposes while under the direct supervision and control of a responsible adult who is not prohibited from possessing firearms; or (v) while hunting if the hunting is legal in all places where the person to whom the firearm is transferred possesses the firearm and the person to whom the firearm is transferred has completed all training and holds all licenses or permits required for such hunting, provided that any temporary transfer allowed by this subsection is permitted only if the person to whom the firearm is transferred is not prohibited from possessing firearms under state or federal law;
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The problem lies in what is NOT included in the section which enumerates the things that the law DOESN'T apply to. Some things that are not mentioned:
My handing a pistol to my friend when we are out target shooting in a remote location, DNR land or a private range, (which would not be included in the "established shooting range" description).
If we are informally target shooting and not part of an "organized competition".
If you are hunting with a buddy who brings along his 19 year-old son, and you hand him your rifle to look through the scope, even without intent to fire the weapon. He's not under 18, so the exception to the law does not apply.
If I am showing a friend (not a spouse or other family member), my new pistol, at my home, standing in front of my gun safe, and I hand it to her/him, that is a "transfer" in the meaning (perhaps not the intent) of this law.
If my fiance (not yet my spouse nor currently my domestic partner) gives me her pistol for cleaning in her garage after we come back from the range. That is a "transfer".
In each case, violation would occur when you hand the gun to the other person, and a second violation would occur when they hand it back to you.
As I said above, the non-gun-owning people who write these things do not understand how and why guns may move from person to person. I doubt if they intended it to be interpreted this way, but that becomes OUR problem and not THEIR problem if the local LEO's and prosecuting attorneys, etc., interpret it that way, then WE have to defend ourselves in court. During that defense, our other guns and ammo will be confiscated and held pending the outcome of the trial. It could take months or years to successfully defend ourselves and get our property back. If found guilty, then we will be convicted felons and never get it back, in addition to jail time and fines. All this for people who are otherwise law-abiding, caught up in technicalities, meanwhile people will continue to be murdered by real criminals who are still buying and selling stolen guns without going to their local FFL for the transfer paperwork/background check.
The main thing that control people just don't understand: Criminals don’t obey laws. Pass as many laws as you want, once someone has declared themselves to be an outlaw, they can do whatever they want. THAT'S THE DEFINITION OF AN OUTLAW.