Re: barrel inserts for nef legal for hunting?
It is relatively easy to make a muzzleloader insert for a shotgun, and using 209 primers utilizes the same firing pin.
In fact, if the insert must be removed to reload it then it is the same as a cartridge isn't it.
In fact I made a 223 insert for my 10ga.
My buddy and I made a 410 insert to slip into his 12 gauge.
The game law regulates some types of guns by ignition, some by barrel rifling and some by caliber size. If a rifle shoots a bullet through a rifled bore, then isn't a Mossberg 12 ga with a rifled slug barrel a rifle? Is a 22 rim fire rifle loaded with bird dust a shotgun despite the rifling. Shotguns are legal for hunting under some circumstances. when used with fine shot no larger than a specified size., for small game. So then if you attempt to shoot a 22 mag through an insert, it no longer uses fine shot and would be illegal, unless the insert converts it to a rifle. These are the sorts of things that the PGC and the game law have not addressed. Lets say you buy a rifled single shot 12 ga with rifle sights and slide a 30-30 insert into it. Is it still a shot gun? is it a rifle? Is such a shotgun illegal for deer because the slug is under the size of a 410 ga.?
In 1977, the game law was much simpler for what was legal. For deer, ANY firearm propelling a ball or bullet, except for rimfires 25 cal and less. (semi auto and auto guns were prohibited under a different section) So an insert in a shotgun would not have mattered. Today, I am not so sure. Many firearms were written out of the law because of the way legal hunting firearms are now regulated.