I'm not sure I'm good enough a shot to place the Birchwood/Champion targets in the berm...it's a bit of a ways away, LOL!
I was thinking of what it would take to make post extensions I could set in the ground to place it within. of course that does 'add' complication.

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shooting downwards is a bit awkward and quite unnatural. at the range yesterday the guys were shooting bottles set up on some plastic barrels and because they were shooting downwards, some of the shots were skipping/ricocheting into the berm. was quite surprising to see!
found another supplier, Do-It-All sports. horrible website, but some cool products.