How flutes work:
Okay. You want a 26" barrel, and you want it to about an inch in diameter at the muzzle.
That's gonna be a heavy puppy, but the truth of the matter is, larger diameter barrels are less subject to "whip" or barrel vibration when fired. They just group tighter because of this.
Now, you're gonna get a hernia lugging that thing around. But you want the big diameter. What do you do? You call someone like Billy Stevens or Speedy Gonzales, and they flute the darn thing to take off some weight. You've got roughly the same diameter, so the barrel won't whip.