I've heard that before as well Marc, but I never talked to anyone that was dumb enough to actually try it themselves. Aside from the unsupported case in the what would be considered oversized chamber for the .44-40, there is the issue of trying to push a .427 caliber slug down a thin walled .410 bore barrel. That's if its cylinder bore choke. Considering that full choke on a .410 is .385 bad things are gonna happen. Just so there are no misunderstandings, while you can shoot .410 shotgun shells in a firearm chambered in 45 lc, you CANNOT fire 45 lc in a .410 shotgun! Long before the long chambered"judges" were produced, handloaders were cutting down .410 shotshells to fire in 45 lc's. They were known as snake charmers in my area. I wouldn't recommend trying it if your not very knowledgeable about reloading. As has been stated previously, only use the correct ammo specified by the manufacturer. Especially if your understanding of firearms and related physics are limited. Josh