It special because it's the first commercially available Short Action short mag 6.5 cartridge, it's very good cartridge design, it has low recoil, it has reasonably priced readily available quality factory ammo unlike some older belted 6.5s
Is there other commercially available 6.5mm cartridges similar in performance....sure is, but some of them cartridges you can only find brass for them at an antique store !
If I had a 264 win mag I wouldn't sell it to get a 6.5 PRC but would certainly look at the benefits of that new design once the throat wears out in my overbore designed cartridge.
First cartridge of magnum size to be housed in a short action...........really?
Have you not heard of either the 6.5 Rem Mag or 350 Rem Mag cartridges?
Both came out in short action rifles.
Case design is NOT the only factor in how fast or slow the throat wears. Shoot a 222 hard and fast and get it hot and it won't last any longer r a high intensity cartridge does.
Throat length and design play a significant role in how it wears and what and how you load the cartridge. A 264WM SAAMI spec reamer has a zero leade, the entire portion with no rifling is .060" long, this was due to the original dual diameter bullet they used to bring pressure down. The better way is to run a parallel sided throat at .2645" at .220" long. The A191 style coned/tapered throat can also be utilised if desired, pressure is reduced even more.
The 'belted' 300WM has held so many target records both LR and ELR it's not funny...........yet it has a nasty belt on it.
I still run 300WM in F-Class where everyone else has gone WSM or SAUM. I get an additional 100-150fps over those other cases WITHOUT excessive pressure or ruined brass.
I also run a 264WM in F-Class.........why?
Because I can get 3200fps easily with Berger 140gr Hybrids. This is substantial, my 6.5x47 is lucky to get 2900fps with those pills in a 26" barrel. My 24" barreled 6.5x47 only gets 2850fps tops.
Just because a cartridge is NEW, doesn't mean it hasn't been done before. Just look at the old wildcat, now factory offered, 6.5-300 Weatherby.
That's been around since the early 60's.
Cheers.
P.S.
There is nothing special about the 6.5 PRC, it's just another cartridge to choose from.