I don't know if Colt sights 'em in or not, but I once took a 6920 out of the box, loaded it and shot a carbine match with it. It rang 6" plates at 100 with ease. I was surprised to say the least.
After the match I shot it at paper and it was right in the middle and 2" high at 100. I'm guessing they have set 'em for 25/300 since I tend to shoot low with irons (I can't see as good as I used to).

