Ichor Bullet

Type	Ammunition
Damage	13 (Ranged)
Knockback	4 (Weak)
Base Velocity	5.25
Velocity Multiplier	3×
Tooltip	Decreases target's defense
Rarity
Sell	6
Research	99 required
Debuff	Ichor
Debuff tooltip	Reduced defense
Chance	100%
Duration	10 seconds

Ichor Bullets are Hardmode bullets that inflict the Ichor debuff to enemies, decreasing the enemy's defense by 15 / 20 points, which effectively can increase the damage from the bullet by up to 8 / 10 from its base value of 13, totaling the effective damage up to 21 / 23. They are the Crimson counterpart to the Corruption's Cursed Bullets.

Crafting

Recipes

Result	Ingredients	Crafting station
only: Ichor Bullet150	Musket Ball150 Ichor	Mythril Anvil or Orichalcum Anvil
only: Ichor Bullet50	Musket Ball50 Ichor	Mythril Anvil or Orichalcum Anvil

Tips

When fighting bosses, it is advantageous to keep some of this ammo in the ammo slots so you can switch between these and your main ammo to inflict Ichor and increase damage dealt with your main weapon. It is not recommended to use this ammo type as a main, since other types (most notably Crystal Bullets) can inflict significantly more damage with the Ichor debuff applied.
The Destroyer, the Lunatic Cultist and all Celestial Pillars are immune to the Ichor debuff, making this ammunition mostly useless against them.
Ichor Bullets reflected by Mimics in Expert Mode do not inflict the Ichor debuff on the player.
In a PvP scenario, the damage increase from Ichor actually changes depending on the difficulty: on Journey/Classic it will increase the effective damage by 10, 15 on Expert, and 20 on Master mode. This is due to how the effectiveness of defense changes with the difficulty, getting stronger as it gets harder.