Actually, from an engineering standpoint, a "Rifle Drilled" or "Gun Drilled" Axle or shaft is stronger than a solid round billet, no matter how the original shape was formed.
A tube distributes shear along the sides of the shape and won't twist as a bar or solid shape of any kind would . . Using a 1" X 1" square bar as an example, but a 36" bar in a vise and twist or bend it. While that may require a cheater on the wrench to twist, it's not that hard . . now try the same thing on a 1" X 1" X 1/8" tube . . If you twist it at all, it took a bunch, and probably a lot longer (and stronger) cheater . . What makes it so tough is the four 1" X 1/8" I beams you have to deform.
With a round tube, the I beams are just smaller and more numerous, literally. Stronger and usually a third to a half the weight . .
But . . they don't "Wrap up" to any degree at all, simply because once they twist, they're gonna fracture oe deform, followed by failure. You can't twist a tube, but you can a bar successfully, many times. A torsion bar is a good example. But you won't find "Torsion Tubes" . .