If by ˝Burger World˝ you mean the globohomo clownworld we are living in, then yno.
>What if you created a swinging-chamber design that sealed mechanically instead of using the cartridge? Say an O-ring on the chamber, plus a heavy spring pushing on it from the back. Alternatively, you could engineer a small lip on the barrel into which the chamber fits, and put the chamber on a cam track which forces it into the lip.
An important aspect of floating chamber designs is that they are supposed to be stupid simple, so they would be both cheaper and more reliable. I can't stop praising the Steyr ACR enough, because from a mechanical perspective it's about as simple -or even simpler- than the average gas-operated open bolt machine gun. And indeed, the chamber's position is equivalent to an open bolt. Yet, it has to travel vertically a relatively short distance, therefore the delay between pulling the trigger and the weapon firing is comparable to a closed bolt weapon, so it really is the best of both worlds with no downsides (in theory). Adding springs and whatnot just to fire ammunition not meant for the gun is inherently flawed, and you will only engineer yourself into a box of problems.