Actually, as an Engineering Student, I can think of at least one way to design a functional clip/revolver ammunition feeding system using springs and wedges. The design in my brain is probably too complex to properly relate through text alone, but I can give the gist of it.
Essentially, the outer part of each revolver barrel has a wedge shape, and is placed using a spring that continuously pushes it forward. Now, in the back part of the feed, a system of wedges exists that, as part of the barrel's rotation, the bottommost barrel has its outermost part peeled back.
Inside the clip, a simple springboard is placed so that it pushes the bullets upward when there is room to go upward. Essentially, if an empty revolver barrel reaches the bottom part of the weapon, where the clip is, the outer part is pulled back, allowing the clip to refill the barrel. As the revolving barrels continue to rotate, the wedges in the rear part of the feed no longer hold the outer barrel back, and the spring pushes it back into place. When it is pushed back into place, the wedge on the outside part of it shoves the remaining bullets in the clip downwards as it makes room for itself.
Granted, this offers little practical advantage over a standard clip or revolving ammo feed, but it could plausibly be done.
I feel immensely validated by your articulate and educated post. I do feel a little let down that you failed to mention the rainbow magic that I previously mentioned fuels the whole mechanism of the rifle, however.
While I'm at it, the Gyrojet rifle is a perfectly plausible (if probably inefficient) design, and while the Murdelyzer is probably not an effective weapon in real life, the alternate universe that Fallout takes place in has some... ...interesting laws of physics that apply at the nuclear level, meaning that such a device would likely be a devastatingly effective weapon.
Well, the Murdelizer is a disintegrator weapon, so it works by disrupting the forces that hold matter together. Some disrupt intermolecular bonds, causing the target to fall apart into dust or ash. The most powerful, like the Murdelizer, somehow disrupt the nuclear force and tear atomic nuclei apart, causing targets to disperse as a haze of subatomic particles. Zap!! As you said, there will have to be some, well, interesting laws of physics at the molecular or atomic level for these weapons to work...
Is there a reason the M2045 has both a cartridge and a Revolver cylinder?
(still looks cool though)
Essentially, the outer part of each revolver barrel has a wedge shape, and is placed using a spring that continuously pushes it forward. Now, in the back part of the feed, a system of wedges exists that, as part of the barrel's rotation, the bottommost barrel has its outermost part peeled back.
Inside the clip, a simple springboard is placed so that it pushes the bullets upward when there is room to go upward. Essentially, if an empty revolver barrel reaches the bottom part of the weapon, where the clip is, the outer part is pulled back, allowing the clip to refill the barrel. As the revolving barrels continue to rotate, the wedges in the rear part of the feed no longer hold the outer barrel back, and the spring pushes it back into place. When it is pushed back into place, the wedge on the outside part of it shoves the remaining bullets in the clip downwards as it makes room for itself.
Granted, this offers little practical advantage over a standard clip or revolving ammo feed, but it could plausibly be done.