Sorry man, but what you are saying doesnt make any sense. The only thing I can think of, as to why you believe you are getting bigger hits, is because it is not as harsh and you don't cough as much when hitting a bong.
You really aren't making any sense. IF you remove the water from a bong, it becomes just a pipe. So unless water does something absolutely magical, like disobeying the laws of chemistry and physics or obeying them, and somehow having water alter its chemical structure to make more salvia smoke, then you may have something.
There is something called "the law of conservation of mass and energy" which stipulates that nothing can't come from something and something can't come from nothing, there must always be the same amount of matter and energy in a system as before (matter and energy are interchangable).
Now, if you load a pipe for one hit, and you load a bong (which uses the same principles as a pipe, but adds a filtration element) it will be the same amount. No, when you smoke it, and take the full hit, assuming it lights the same, and you inhale the same way (but you actually inhale faster on a clean pipe than a bong because there is no resistance), then there is no reason to believe that a different amount of smoke will be created. Since water acts as a filtering agent, meaning less things come out of water than go in, wait for it, you will take LESS of a hit in a Bong than a pipe.
Shotgun holes are ALSO on pipes (good ones anyways) and that might be the semi-half-witted comment you are trying to make.
If you don't eat your meat, you can't have any pudding. How can you have any pudding if you dont eat your meat!?!!?