I think that the action of corrosive ammo in the destruction of a firearm doesn't come from firing a gazillion rounds in one sitting, but firing a few rounds, and leaving the firearm in an atmosphere where humidity can work with the corrosive salts to eat the bore. A process that is slowed greatly by the chrome-lined bore, but can still work on other components of the weapon.
As far as burning through ammo, long and fast enought to turn the weapon into a torch, I just don't see the point. Seems almost like vandalism to me; but then again, I am an old fuddy-duddy, and I have a limited ammo budget.
"It is better to be too skeptical then too credulous"