My guess is he was well armed but didn’t use anything special, otherwise, we probably would have heard it by now. “assault weapons” “high capacity magazines” etc. etc.
http://en.m.wikipedia.org/wiki/Expanding_bullet
Dum Dum arsenal in Calcutta India ...the .303 was the first one.
Outlawed by the Hague in 1899. Close copies were cobbled up by troops in the trenches in WW 1.
IMO this killer used soft point hunting ammo he modified with the cross cuts in the soft tips of each round if he did anything.
Agree with you as to the presstitutes just being dumbasses with regards to any weapons related reference.
Stay Safe !