User blog comment:NoBanana/Speedrun Log/@comment-11588261-20160330224006/@comment-24108228-20160404074440

Horn rate is now 1/3, so you'll probably only need to kill about 6 to gain a single dust. On a good day, you may need to kill 2 or 3, and on a bad day you could be burdened with having to kill 8-10.

Compare that to other factors, like "On a good day, nobody stops you and the Spring vein is untouched, and on a bad day, you could have to try all three veins before you find one with ore on, and then you find that magma is inhabited by a territorial tribe and you have to spend a couple hours befriending them by defeating their mortal enemy and defending them from an organised raid."

This applies to any speedrun really. Since server creators got patched, you can't guarantee you're the most advanced player (or only player) on the sever, so it's possible that anything could happen, as is the beauty of 303.