First off, I like the Block brand and have had good blocks in the past. But for whatever reason my Easton 4.5 micro arrows push completely through the Block 6x6 at 20 yards. Unfortunately, it seems when the arrow exits out the other end, it takes out a huge triangular-shaped chunk from the target. My buddy has the same block and shoots Easton 5mm and doesn't have this problem. Block, however, came in handy a few weeks ago as an extra seat in Idaho during our elk-hunting trip.