< 1/2 MOA 6.5 Grendel Barrel?

[StoneHendge]

do i understand that a proof research 6.5 creedmore barrel is only good for great accuracy to 2500 rounds?

A 6.5 Creedmore barrel is expected to start degrading at 2500. Overbore cartridges erode the throats rather quickly. Proof claims to get longer barrel life due to their cooling aspects and I guess I'll see. All of their other claims have held for me but I always remain skeptical until I see otherwise. To put that in perspective, though, a 6 CM is estimated at around 2k while calibers like 300 WinMag, 338 LM and all of the WSMs only have about 1k in them. I think 6.5 Grendel is around 5-6k while .223 and .308 are beyond that. I had a .223 barrel that I used for varminting and long practice sessions that I retired at 8k. It was still shooting slightly under MOA, but that's not minute of prairie dog when you get out a few hundred yards.