I had similar criteria (steel out to 500 yards) and a 2.5 x 10 optic. I went with the 16" SS BCM with the 13" KMR rail. In my experience, the correct ammo will make more of a difference than the 2" of barrel.
That PRS stock might look pretty funny with the 16" barrel if that matters to you. I wanted something a little lighter and handier and went with a standard collapsible stock.
We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution.
Abraham Lincoln
Bookmarks