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Can you post some info about it? It's hard for me to imagine how the brain would come flying out towards to shooter, but


All sorts of strange things happen in high velocity impacts, especially supersonic impacts. The trick with bullets is that they have a wake with a very-low pressure area behind.

The bullet causes compression at the point and instant of impact, but that's followed immediately by the wake, which is lower pressure. The compressed mass is going to do an elastic rebound, some of it in the direction of least resistance, ie, in the direction of the hole, open air, and low pressure. It won't all go that way by any means due to momentum transfer, but some will.

Also, the shock-wave in front of the bullet is going to bounce off the far end of the skull that isn't blown off and push some stuff back out the entry hole.

Even in slow impacts, such as dropping a rock into a pond, some of this can be seen - you'll get a rebound *upwards*, towards the "shooter", in the middle where the rock was dropped, as well as outward ripples from the pressure wave in the water.

What actually happens in any given case depends on a lot of details, and human tissue can be complex. Having all of JFK's brains fly towards the shooter is likely impossible, but having some, even a lot, is not once you work out all the details.

Hypervelocity impacts can be even stranger. For example one problem with meteor/asteroid impact theories for a long time was that every candidate impact site was circular and not a long oval. What are the odds that *every* impact is perfectly vertical? Later it was realized that in hypervelocity impacts (much beyond the JFK rifles) the crater or energy release is always circular except for extreme cases: you always get a circle no matter what the impact except nearly horizontal grazing cases. So proposed impact sites didn't look so "lucky" after all...
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