I personally don't think the bullets fail, I think we fail at understanding. Prime example I certified with muzzle loader in Alaska, most accurate bullet and load I found was 295 gr SST ( Hornady ) with 80gr pyrodex. Shot my first moose at 15 yards. Died 6 steps away heart shot. I caped out moose and found bullet in hide on other side, nice mushroom. At that point I thought bullet was garbage, at that distance with only hitting 1 rib should have passed through. What if I hit the shoulder blade. But after studying bullet design and recommendations from Hornady, it did its job perfectly. I was the one who did the injustice by not understanding the bullet before hunting with it. Just my 2 cents