Kabar designed the Heavy Bowie to compete with the Becker BK9 when it was still being made by Camillus. Now that Kabar makes the BK9 I think they have stopped making the heavy bowie (didn't see it on their site the other day when I was there). So finding a Heavy Bowie might be harder then finding a BK9.
I have both and use both. I prefer the tip on the Heavy bowie more then the one on the BK9. Both are good knives and will serve you well. You need to deside which style handle and tip you like better. One of them is normally strapped to my leg or pack when I hike and backpack. A Bowie knife is a usefull think in the wilderness IMO.
Ok , cool, you have answered a few things I'v been wondering about, thanks! I also checked the ka bar web site, and found nothing about the heavy bowie. you can still find it , and for $20 cheaper too, and lighter. Man the more I learn, the tougher my choice seems.