Talk:Tonkor/@comment-178.205.217.55-20150914195549

"As of Update 17.3, explosive AoE damage from sources such as Tonkor no longer always deal headshot damage unless the projectile directly hits and explodes on the head, essentially halving what damage these weapons once easily had against enemies."

Considering that it's primarily a critical-based weapon, it's safe to assume that the change/nerf cut the Tonkor's damage by 4 times, not just 2.