I have a Weatherby Vanguard in the discontinued Predator model. It shoots just about any 223 load very good. Now, I don't shoot any 223 bullet heavier than a 55 grain, so don't know what would happen with heavier bullets. If I want to shoot heavier bullets, I'll switch to a 243. As a matter of fact, on a good day, it will shoot as good as any rifle I have. If I have any criticism, it is about the bolt stop screw, as mine recently broke.