Has any one using the above bullets experienced them just penciling straight through? I'm using them in a .222 remington over 20grs of n-133 giving 2740 fps. It's very accurate but I have shot 3 foxes all have died but two fell over only to get up and run both were dead when found but! Have shot one today from the lounge window a shoulder to shoulder shot two broken legs one dead fox but no expansion! Any ideas gratefully received. I will be speeding them up alittle but the rifle seems to like it slower?