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Double Tap is good stuff if you are looking for some really hot loads. Buffalo Bore is pretty wicked, as well. Probably won't get hotter safely/without reloading.

Just like every other trick wiz-bang frangible bullet on the market, they do not provide adequate penetrtation. I believe there is a plastic ball inside the bullet, similar to one of the Corbon loadings. If you search around, you will find all kinds of supporting evidence that this stuff is trash.