Projectile Protection

Projectile Protection is an armor enchantment that reduces damage from projectiles such as arrows or fire charges from ghasts and blazes.

The Formula for damage reduction by projectiles is (8 x Level)% meaning for every additional Level another 8% of the damage is absorbed. The highest Level (Projectile Protection IV) will absorb 32% (4 x 8%), so basically 1/3 of the damage inflicted by any projectiles. Theoretically at Level XIII (13) no damage by projectiles are possible (because it would transcend 100%), but since the damage to be absorbed is capped at 80% the maximum efficient Level to use would be X (10).

Damage reduction from Protection, Fire Protection, Feather Falling, Blast Protection, and Projectile Protection stacks up to an upper limit cap (see Armor).

Protection, Blast Protection, Fire Protection, and Projectile Protection are mutually exclusive. However, if commands are used to have two or more of these enchantments on the same item, the effects will stack.