Yes, they are inch spaced grids, it was shot at a shooting station at my local range on the 300 yard stand, taken from a standing postition, with rifle unrested. I didn't take a laser range finder and mark off, but I'm willing to guess that if it wasn't dead on at 300 yards, it would be 299 or 301. Close enough to call 300, in my opinon, anyway. And that was a long walk to take after each shot and verify. (The range was slightly beyond the clarity and magnification of the scope.)