I'm in a pickle

[Fess]

I found a pretty good deal for a 16" lilja on six sigma that seems to fit my needs, I'm not looking to make 800yrd hunts in as much as I want the potential to be gtg at 600.

There is a BIG difference in hunting with a Grendel at 600 yards and shooting steel. I am more conservative than many here, but I don't consider the 6.5 Grendel to be a 600 yard hunting cartridge. Also be aware that most data for factory ammo is with a 24" barrel. The bullet will be going pretty slow out there so expansion will be an issue. Any wind will move the bullet a fair distance laterally.