How much more 'powder capacity' does that 'stretch version' have over the 6.5x284? And how many less rounds does it take to 'burn out a barrel'? To the same 'burnt-out state, of course?....
Actually they are pretty close. I did some checking.
Seems the advantage of the PRC over the 6.5-284 is cheaper quality factory ammo, much like what seemed to give the 6.5 CM such a jump on its competition.
The PRC has a mag diameter rim, whereas the 6.5-284 is rebated '06 diameter.
As with the Creed, a big difference seems to be marketing. Factory PRC ammo is hotter than factory 6.5-284 ammo, but with the handloader, pretty close.
I have a great Pre-64 Krieger 26" 6.5-284, not looking for a 6.5 PRC.
At similar velocities, I would think barrel life would be pretty close.
DF