No, the reamer won't reach the rifling because it is already chambered long for the .410. If it can't get to the end of the chamber, it ain't gonna help ya.
The .410/.45LC works well for a lot of folks in different places. gendoc and his tribe are a good example. They not only use them, but make them work. The gun is what it is, and I don't think you can add to it. If you want more, get a different firearm. The .410/.45 doesn't work for me where I live and what I do. I have a dedicated rifle or shotgun ready to go when its particular situation arises. I don"t (Thank God, for once in my life) have poisonous snakes to deal with. They have a hard time cohabiting with three feet of snow.
All my Handis and Pardners work for the jobs they're meant for. I just grab the appropriate one at the time.
Pete