Winchester bullet ID help

[Pyro]

Found this on the ground at a police range.
Anybody ID the bullet? Never seen it before, the "hollow" point has lead all the way up to the jacket's rim. I thought it was full of dirt, you can see my knife scratches in the lead.

 

[Pyro]

Never mind, found it.
http://mousegunaddict.blogspot.com/2012/08/ballistics-testing-winchester-ranger.html

Interesting design.