JG,
I agree with you about the NAB.
But, that's a nasty entrance wound, looks sorta like those early Ballistic Tips before Nosler changed the configuration.
JB wrote about some NAB's that slipped thru production with someone trying to hurry the process. The result was bullets not correctly bonded.
To the OP, are these new NAB's or some you've had for a while?
DF
This was my first thought as well. I am going to just stick to using NP's..