its hard to say, in my friends gunshop they sell 100's of the 223 rifles of all makes and have a single 6.8 upper on the rack that has been there for a while. It may be growing but at what rate and what percentage of total sales? Not much is my observation, there is a small vocal minority but once you get past launching a 22 from a 14 inch barrel into 16 or 18 inch barrel lengths the need for the 6.8 kind of fades away (ask the Eskimo's they kill everything with the 223). Some people like to pour cold water all over another man's choice in firearms or calibers and treat said purchases with disdain. In my opinion there is just not that much difference in the 3 we are talking about and anyone that says there is has some type of hangup over one or the other of the cartridges.
Guess you have a short memory. Typical post from someone who doesn't know jack about the 6.8.
