Default, I dont have a KM77VT in 223, but I do have one in 243 and one in 25-06. These are two of the most accurate rifle, out of the box that I have ever owned. I also like the LC6 trigger that Ruger put in these rifles. Quite a change from the older triggers Ruger has used in the past. I am very new to reloading, I am trying to buy up all my components. With factory ammo my 243 likes the Winchester Silver BT 95gr. And the 06 likes the Hornady 117gr best. Good luck with your rifle...Ray