Ammo Stock

The Ammo Stock mod increases shotgun magazine capacity by 10% per rank for a maximum of 60% at rank 5.

Magazine capacity increase
For some weapons, a 10% increase (or a multiple thereof) in magazine capacity results in a non-integer number. When this happens, the number is rounded to the nearest integer where 0.5 is rounded up. The following table shows the specific increase in capacity of certain weapons.