The .204 is based on the .222 Mag case so there's little size difference here except the lighter faster bullets.It's not at all a bad round I just prefer the larger heavier bullet's of the others for coyotes and bobcats.CZ offers their 527 in .222 last I checked but not sure now.Probably the most accurate of the bunch.It's what I really wanted myself but I found a dealer that bought a bunch of the American's in .223 and was selling them at a price to good to pass up.