It's clear that many posters here don't have a grasp of what causes hits vs. misses at various distances.
Ain't that the truth.
Shooting at say 600y at an elk sized target (let's say 12" round vitals), a cartridge's drop is not even worth talking about.
Absolutely right. Because cartridges don't have "drop." Bullets do.
And windage is where the big case, high BC rifles excel.
I'm not familiar with the concept of "high BC rifles," could you please elaborate? Is there a book or a table somewhere that I can use to look up my rifle's BC?