Test media was water soaked phonebooks with a piece of 3/4 plywood(simulate bone) 2" behind the first phone book.
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What was very surprising was how deep it actually penetrated.. One of the reasons I've yet to run a solid on game is that they aren't gonna open up like I'd prefer at longer distances..
I really need to catch a few of these at 700-1000yds to see expansion at those velocitys...
But these pics are pretty much typical results outa my test media at 100yds.. As you can see core is gone..