My thoughts on the 410 handguns:
I initially wanted a judge and still sort of do. But I have a couple requests of Taurus, first, I want a longer barrel for the 3" chamber that doesn't weight as much as the raging judge. They made a 6"bbl with the 2.5" chamber, why not the 3"? I also would like to see a choke.
Magnum research did a beautiful job with their BFR, (I own one) has a removable choke, and a 7.5 inch bbl with the 3" chamber. The gun is massive however and I wouldn't carry it without my shoulder rig. The long barrel should help a lot with the 410 velocity. My BFR is a lot of fun to bust clays with, and is a very well made and strong gun.
Other thoughts that are probably best left alone but I love to dream about doing Elmer Keith -ish type things....
I have some theory's I want to put to the test concerning the 410 hand guns. First, magnum research makes a 460 s&w BFR with a cylinder that should fit 3" 410 shells. 460 s&w has a max saami pressure of 65,000 psi, which is far beyond any pressure seen in any shotgun cartridge that I know of. If some one were to get their hands on some strong 3" shot-shells made of brass, and custom tailor a shot shell load at those pressures, imagine the ballistic capabilities. All of the sudden you would have the most formidable 410 pistol ever made. Something very similar could be done with the Raging Judge at 454 Casull pressures. I don't know all the logistics of wad strength and such but I am sure it could be worked out. another concern would be possibly dealing with extraction because of the case extending past the lip inside the chamber at the edge of the 460 case. it may need to be bored out to the length of the 3" case. Of course all of this would be much better accomplished with a smooth bore but hey we have to work with the laws we have.