Wow thread revival at it's best.....
I started this thread 4 years ago because after all the picking and ribbing that we usually do to each other in fun of course

, I wanted to know exactly what they were doing in a practical sense from experienced people who did without them for a long time and then one day they were there. So an apples to apples comparison from experienced with both. I was only experienced with the old.
So in the four years or so, is there enough data or changes in thinking to say that.........
........they've reached their peak in popularity but will maintain a lesser but solid following, side by side with older similar cartridges? Or in 40 years from now,... will someone that totes a magnum say,".300Win Mag, hmm.. never heard of that before or a .270WSM toting sheep hunter remark...... "I didn't know there was a .270 cartridge before my 270WSM? Remember everyone is not all Gun Nutz and some do a lot more hunting than just reading about hunting or whatever to know rifle history so use your imaginations.
The two that will be here in years to come I'm sure, the .270 and the 300, will they slowly but steadily out pace the 270Win and the 300WM and be the new standards in their respective bullet diameters, or will it be like the .308Win will never replace the '06 but equally as popular. Years of use should temper initial hype and fashion everytime, but there were lost, many many good innovations in their day, the 280Rem, the .284Win etc, that should have hung on.
I guess what I'm saying is, do the WSM's do enough to survive on merit alone? Will they be lost to the standards of today like the .284 and 280 were eventually in their time, or will marketing and gun writing continue to sell them by slighting proven cartridges that already were doing for many years what they can do?