The Tainted Shell mod reduces the spread of Shotgun fire by -7% per rank while also decreasing the fire rate by -5% per rank for a maximum of reduced spread by -77% and reduced fire rate by -55% at rank 10.
This mod is ideal for shotguns with high fire rate with wide spread like the Boar and Boar Prime as the mod concentrates the pellet flow against a single target, though this would hamper the DPS capabilities of the modded shotgun.
This also blends effectively with Shotgun Spazz, as the rate of fire will remain almost unhindered while receiving the benefit of a narrower spread.
Due to its lack of falloff damage, this mod is useful in decreasing the spread of the Drakgoon allowing it to hit distant enemies more effectively.
Because of the Tigris's duplex trigger shot, this mod gives it virtually zero DPS loss.
Adding this mod to the Phage will only decrease the initial cone of the beams.