The bullet was launched at 2,880 from a 1-12" twist 308 Win, hit an elk at 175 yards, didn't open/tipped on impact traveling backwards where it was found on the offside (backwards). It hit nothing before impact (branches, etc).
Simple really... when a bullet relies on a tiny air cavity to initiate expansion, chitty things will happen occasionally.
That's why I prefer Partitions... far less to go wrong.
