There is a test comparing the two, ranger t and dpx, on a kel tec board. They used wetpack. The dpx went deeper, i think it opened wider. the talons caused extra damage on the rangers. http://www.ktog.org/cgi-bin/yabb/YaB...num=1149377730
The Magtech Copper rounds have not expanded in every test i've seen. They are nothing like the DPX.