I have a bunch of 223 50 gr v max bullets and can't get much of a group with the powder i've been using. I have used IMR 4895 and 3031 and the best group I have gotten is about 5/8 of an inch. Not that I am dissapionted but I have gotten better than 1/2 inch groups with 50grhp federal value pack bullets out of the same rifle so I know it can do better. Thanks Gary