Can someone tell me what happened to this bullet?

I believe I got it from them when I ordered originally. They are very similar to cavity back bullets and I have shot a lot of both. The cavity back has it on their website at 600f/s too. They have been very consistent on game especially Florida whitetails. You just have to make sure the tips are clear. I have found a few blocked by machining chips. I check each one now as I load them.

Thanks

Buck
 
Something no one mentioned.
I'm going off the pic, it looks to me also the bullet entered unstable.
I'm betting the barrel is not truly 8" twist.
I would check it with a cleaning rod and brush.
Even though some are marked a certain twist don't guarantee it truly is.
Just a thought.
 
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