Bergers have a more accurate BC? Berger BCs were understood to be definitely oversated. My guess is those extra long bullets are wobbly, and a wobbly bulley has a crappy actual BC regardless of what it is on paper. It seems that BCs much over th .630s just don't shoot so well. And if it isn't windy, even lesser BCs are better.
They seem to have a good rep on LRH. I would expect the BCs using the G1 standard projectile (short, flat based, spire point) to get more and more inaccurate the higher (for caliber) they were. Just seems like that's how it would be with the bullet becoming less and less similar to the G1SP. But the G7 standard projectile (long, boat tailed, spire point) being used as a comparison is a more accurate BC for bullets similar to this design. You can search online for G7 calculators. The higher BC bullets would always get my vote for long range shooting, cause it's always windy here
The longer bullets just need a faster twist to be stabilized correctly, which is why most rifles won't favor the heavier bullets, especially when they are long match bullets with high BCs. Right?