Price +2 bonus; Slot none; CL 9th; Weight —; Aura moderate evocation
This weapon special ability can only be placed on ammunition. A creature struck by a piece of penetrating ammunition must succeed at a DC 17 Fortitude save or the ammunition proceeds to travel into another creature in line. The attacker must be able to trace a line starting at her space and passing through both targets to make this additional attack. The second attack is made at a –4 penalty, in addition to any modifiers for added range.