[Unclenick]

The reason hollow point match bullets are most accurate are several. One is that the jackets are thinner than hunting bullets, which makes it easier for the manufacturer to give them uniform wall thickness. Another is that symmetry of the bullet's base matters much more to accuracy than a perfect nose, and it is easier to make the bottom perfectly symmetrical if it is formed from the solid copper bottom of the jacket cup, than it is when the base has its heel turned in over exposed lead.

Note that boattails reduce drag, and that makes them important at long range. However, it is more difficult to get perfect symmetry where the boattail meets the bearing surface than it is to get a flat base perfectly symmetrical. Also, a boattail takes more time to clear the muzzle than a flat base, so it allows muzzle blast more time to influence initial yaw of the bullet at the start of its flight, making any imperfection in the muzzle crown more significant. As a result, flat base bullets tend to be easier to get accuracy loads with, even if they won't travel as far before wind starts to blow them around noticeably more.

Flat base bullets are also shorter for the same weight. Bullet length is more important to twist rate than bullet weight, so you can actually shoot a heavier flat base than you can a boattail, not counting solids or other lower density bullets. Berger makes some of the best flat base match bullets.