Only the base half of a Partition is tough, the front half is easily expanded and fragmented at low velocity, and as often as not blows right off at high impact velocities. That's not a bad thing, its what it is supposed to do and why it works as well as it does. Half varmint bullet and half jagged solid just in case the varmint bullet half comes up a little short in penetration.
And in this sense, a bonded bullet such as the HotCor/Fusion is tougher.
Imagine that!























































