It really bugs you doesn't it? No, scratch that, it scares the crap out of you that there are people out there that do this stuff. Now, let's be truthful... 1. There is a timing technique used. 2. I'm not "swimming" but being supported and the rifle is being supported by a floatation device. 3. the water is usually very calm, no choppiness. 4. It's something I spent a lot of hours practicing and learning. 5. It's limited in it's uses but it does have some use.
Now, I've offered to show you personally, you refuse adamantly. If you want to call me a liar, come out here and watch me do it and THEN you may call me a liar if I fail to perform.