VLD Bullet
Also: Very Low Drag
A long, sharp-nosed boat-tail match or hunting bullet built around a secant ogive to maximize ballistic coefficient at long range.
VLD stands for Very Low Drag, a class of long, sleek bullets designed to wring the highest practical ballistic coefficient out of a given weight and caliber. The recipe combines a sharp secant ogive with a tapered boat tail base, so both ends of the bullet are shaped to cut drag. The payoff is flatter trajectories and better wind resistance at extended distance.
The classic drawback is finicky tuning. Many VLD designs shoot best only when bullet jump is kept very short, often seated so they touch or nearly touch the lands, where accuracy can fall off quickly outside that window. Their length also demands an adequate barrel twist to stabilize them, so a VLD that overmatches a slow twist will not deliver its on-paper performance.