I know there have been lots of posts showing expansion on Hades pellets but hear is real results on real animal flesh and bone. I shot this medium size groundhog today with my .22 Crown using Hades 15 grn pellet. I have my gun tuned at 145bar, transfer port on 25/30 and have opened up the transfer probe. This was to shoot the heavier pellets and slugs but the Hades just outshoot everything else in my Continum 380 barrel. To get the best accuracy I had to just dial back the hammer to #4 and that gives me right at 900 FPS. Even at 960 FPS it still shot great but at 900 it is more consistent. This groundhog took up residence under my shed and this was the first time I spotted him. It was only a 25 yard shot hitting him just below the ear , passing through the lower part of the skull and coming to rest under the skin on his cheek. So that is about 2 1/2” of penetration through skin, bone and muscle and This is all the expansion I got. Granted it was a young groundhog which would have thinner, softer skull and thinner skinned than an old 15 pound adult. I don’t know how much more if any another 60 or 80 FPS would have made. I have seen so many expansion test done on countless types of media from wet phone books, ballistic jell and different types of clay type materials with some showing impressive expansion but nothing beats the real test of flesh and bone. The Hades did the job along with proper shot placement but I still prefer a heavier pellet or slug on animals bigger than a grey squirrel . I usually use my AF Condor in 25 shooting Hunters Supply 48 grain HP at 1100 FPS. Which anchors big ground hogs even with shoulder shots. The new FX slugs shoot better than the Hunters Supply and do a great job as well but I just like big heavy bullets that produce big fpe. And big wound channels.