I have shot deer with 110g Accubonds out of a 25/06, they ran like a scalded cat, and hit well. Shot the same bullet out of a 257 Weatherby at 3600 fps with a short freebore, which put an end to the running.
Some bullets penetrate and expand just prior to exiting, which produces those dramatic exit wounds when they run off like nothing happened.
My Brother and I found that the long-range accubonds are the best of both worlds, quick expansion, and complete penetration. The key to these LRAB is to seat them very close to the lands in the weights we shoot, 129g, 142g, 175g. I have yet to shoot the 150g & 168g in 7mm, Sort them by ogive length, then work up loads with the bullet seated .003 off the lands, you will NEVER stick one in the barrel. IN our rifles, they shoot less than 3/8" groups, and I can not remember ever having to fire a second round unless I was shooting at a running animal, misjudging the leade.
The LRAB put a LOT of shock on an animal, amazingly so. Many fail to get the LRAB to shoot well due to magazine constraints.
Mark's description of the sheep running off with a large hole in it demonstrates the use of a bullet that is just too tough, penetration with expansion just prior to the exit.
Practice, practice. Place your shot or do not pull the trigger.
After killing two bulls, all I was interested in were Cows(meat). I used a 243 with 100g Partitions at 3000 fps, and never had a goat rope experience, As precision hits, trumps all.