Seems like all the LR match-grade bullets I see are boat tailed and heavy-for-caliber. I don't get why you wouldn't want that for long-range shooting. If 2 bullets are pushed to the same pressure, the one with less wind drift seems more practical (and has a higher BC). That would be a boat-tail, not a flat-based. Even though they're more sensitive to seating depth, I would assume any established LR shooter would have their loads COAL perfected for their combo.
Bullet yaw...I'll quote Bryan Litz: "For all practical purposes,
there is no difference in effective BC for bullets due to various levels of Sg (gyroscopic stability)."
Now, I'm learning, which is why I'll state something countering what you're saying in hopes of a rebuttle that would make me understand why what I'm saying is wrong.