cayugad
Them are the ones...
Note how the copper is rolled over the nose just a bit... you hit something fluid they are going to open... you hit something hard the second part of the partition will drive them through. You might loose the lead in the nose but only after ithas opened and become a cutting machine. The Hydrostatic pressure they create in the cavity is tremendous... Lot of people suggest there is no such thing as Hydrostatic pressure - well I do not know what else to call it - i use to call it Hydraulic pressure - but someone did not like that term either.... All I can tell you is I have seen it....