I don't remember saying that the .22-250 shot flatter but for the sake of argument I'll play along.
Um...the Remington bullets have a lower BC. Would you expect them to shoot flatter than the Federal? This proves what? That all .22-250 loads aren't created equal?
*GASP* we have a MENSA applicant here!
OK I went to Hornady's page. They are less than 0.3 inches apart @ 400 yards with 40 gr. bullets.
Was that supposed to prove something or did you just want me to go there?