If the above story is accurate and this deer was hit 4 times in a vital area with a 243 and just kept on going (which I find incredibly hard to believe) then she must have been shooting 55 grain ballistic tip varmit rounds. Even with a varmit bullet 4 shots should have done it in. I strongly suspect that this deer wasn' t hit as well as you think. Hell, 4 shots in a vital area from a 22 magnum will kill a deer graveyard dead. Not that I recomend a rimfire bullet of this low power even in the few areas it would be legal. All I can tell you is this. I have killed a ton of deer with a 243. Never lost a single one. Put a 100 grain corelock or controlled expansion bullet from a 243 behind a deers shoulder and its dead. Yeah it might run a ways but not enough to matter. I' ve seen a deer shot tight behing the shoulder with a 300 magnum run a 100 yards. No gun will assure you of a sledgehammer dropped in his tracks kill everytime. 99% of the time a deer isn' t recovered its the shooter not the bullet thats to blame. Either because of a poor shot or using the wrong type bullet for the animal they' re hunting.