high bc

Hi, Does anyone know what the heaviest, highest bc 30 cal bullet that will stabilize in a 11.25 is? Altitude is 2500 DA is usually 2500-4500 in the summer. Match bullet suggestions are fine. I’ve alread tried the 208eldm, but it destabilizes after 400 yards. Looking for other suggestions

Folks, We have been very busy getting barrels, bullets, and blanks out to the guys and gals adopting the high bc 131 gr ACE in 25 Cal. We've had guys chamber up 25x47, 25 Creed, 25x284, 25-06, 257 WBY, 25 WSM, and soon the 25 SST. Anyhow, we have made all of our Blackjack Spec Reamer prints...