Originally posted by Arachnyd:

I use silver arrows exclusively after Moder, so, if you didn't load up while you were looking for him, then yes, you'll need more.

Arach

This is just really bad advice.
Silver arrows do 28% of their damage as spirit, which everything in the plains and mountains is completely immune to.
This means they are doing exactly the same damage as Obsidian arrows against all Fuling types, loxes, deathsquitos, wolves, golems, and drakes. Multiple enemies from the other biomes are also immune to silver. Silver is for use against ghost and the undead.
You are seriously throwing away silver for no gain whatsoever.