Who the hell cares what they do at 500 yards? That�s well beyond the range 99% of game is shot at anyway, plus if I were planning on making a habit of 500 yard shots, I wouldn�t be using either of those bullets, and instead go to something like a 140 Accubond or 150 ABLR.
The only place BC wins every time is on the internet. For that matter, I could hunt the rest of my life with round nose bullets and be perfectly content.
