I believe Ken Waters pointed that out
LOL! I was going to say..."you got that from Ken Waters".
I KNEW it wasn't because you had loads pressure tested.
It's BS. I could hardly take it as gospel then and never did. JOC had a field day with Waters on that one.
Case size and powder capacity are practically identical; the 270 bullet is 10 gr lighter. Powder charges are practically identical.
Tell me how you move a heavier bullet from the same case at the same speed as a lighter one with less pressure?
This kind of 280 horseshidt is the reason I could never take the 280 fans seriously. They believe in the Easter Bunny and magical stuff. Barnum and Bailey.....always good for a laugh.