Got a tikka lite 204 as mostly my go to gun and just bought a tikka lite in 223 to use with nightvision,get half inch groups with both rifles at 100yds,get inch groups at 200yds with 204 but spread to 2inch groups with the 223 ,why a different spread with the 223.Shooting 32 grainers with 204 and 40s with 223.Is this the norm with factory ammo.