This last w/end I ended up as last person to shoot due to guests needing their chances. Last hunt, last hour of hunt a Impala ram presented itself at 247 m. I shot it with a far behind shoulder intention as the Impala are producing a terrible amount of meat damage if shot even near shoulder.
The hit sounded and the bush was a turmoil of ewes jumping and bolting every which way before joining up and running off, I could not find my ram in the mix. I counted rams I could see and confirmed that there were two ?

I thought there was only two before shot ? This was worrying ! - Very.

As they got far I thought one animal less passed out from behind a large bush cluster and hoped it was because of expiry date being reached. 

We walked back to bakkie and drove to animal nearest reach point, which was about 120 m from standing point. You have to drive about 3 km to get to this point from a 247 m shot because of ravines etc 
We searched area and found nothing at POI not even blood, so we searched in route to where I thought it may have fallen. At some point I forgot to keep a verbal leash on the puppy and he took it as his chance to bolt. I was furious that he did it again. A moment later I heard his puppy bark and he was onto the animal. He chased the Impala until it went down and I was so proud of him, second time this w/end he did same thing ( earlier we found an impala with a broken front leg and I let him chase it, he did so till it fell and then he bayed till I got there)

Now to the question, the bullet hit about where intended, but did NOT exit, 130 gr bonded at 3000 fps. The bullet hit no bone and no gut, bit of lung, destroyed liver.
I expected a through shot and a 30 -50 m run, but it ran 400-500 m.

Why did this bullet no exit ?
[url= https://live.staticflickr.com/65535/55339388328_d3a7791949_b.jp g" target="_blank">https://live.staticflickr.com/65535/55339388328_d3a7791949_b.jp g"/> [/img][/url][url= https://flic.kr/p/2sj9Q9Y ]2ee78f3c-7e3e-4c5b-a9dd-71dfdc2743cb[/url] by [url= https://www.flickr.com/photos/204555085@N07/ ]frank allen[/url], on Flickr