It's an interesting piece of machinery, but as Jeff Cooper used to say, "What's it for?" It's chambered for the .45 Colt, which is a fine, useful cartridge. But by making the gun substantially larger, it can also fire a weaker cartridge! Oh goody? The .410 is much less desirable than the .45 Colt when bad people are trying to kill you. (The .410 slug, for example, weighs 88 grains, vs. 255 for the .45 Colt.) So, the only purposes for the .410 chambering are (1) to eradicate rural pests like mice and rats, and (2) to satisfy an engineering challenge. (I'm not sure I have those in the correct order.)
If you want to shoot birdshot in a revolver, a .44 Magnum will do that, with CCI shotshells. The .44 Magnum is at least equal to the .45 Colt for hunting, and with .44 Special, at least equal to the .45 Colt for self-defense, all in a handier package.
The rifling in the Judge's barrel is intentionally very shallow; otherwise, birdshot would gum up the rifling and blow the patterns. The CCI .44 shotshell solves that by putting the shot in a plastic capsule, which the .410 payload lacks. Because of the shallow rifling, accuracy with the .45 Colt is marginal, and because of the extraordinarily long jump from the case mouth to the forcing cone, keyholing is likely.
S&W Model 29 is a better choice.