There is a reason the target shooter are still using the 6.5 x 284 over the 6.5 PRC. The 6.5 x 284 is a more accurate cartridge. Yes the 6.5 PRC is faster, but it doesn't shoot as good.
Just my 2 cents
There ya have it. It's on the Inner-Net, so it has to be true!
I call total BullChit