As an employee of bass pro shops, I work the gun counter in the hunting dept. at the Dania Beach, FL. store. It seems to be of general consensus of myself and the rest of the gun counteremployees (don't take that worth very much)that in 5 to 10 years, the 223, 243, and maybe even the 25 WSSM are going to be gone. They were created to fill a gap that really wasn't there, and it's kind of like a trend, I think it will come and go. The 223 and 243, who wants to go to a WSSM case and spend 18 dollars for a box of shells(the cheapest we normally stock I might add)when they could use a regular 223 or 243@ $4.00 a box? To me the ballistics are great, but it isn't practical enough to integrate into the mainstream market over a long period of time. The 25 might stick around, might not, I am not sure on that one. Of all the WSSM guns that I have sold, I would say the 25 makes up about 50%. In reguards to WSM calibers,The 300 WSM is far and away the most popular and I would think is here to stay, the 270 WSM is anybody's guess, I wouldn't be totally shocked to see it go away one day. The 7mm WSM, its on borrowed time to me already, I would be vary weary of buying a gun chambered for that round unless I planned to get into reloading down the road, it is already kind of fading away down here.