I really had not considered your scenario, but it does have merit.
I would tend to avoid the rump due to meat loss, but two years ago I shot a buck quartering to me, and the bullet entered his chest, slightly off center, the bullet exited the opposite ham ( destroying a lot of meat ).
I try for the heart, but this deer caught me by surprise and I shot offhand.
This bullet was a 30 cal. 150 grain SST. If I had had a stouter bullet, I guess that the reverse shot would not have been out of line.
as an afterthought, I don't think that I would take this shot JUST to slow down an uninjured animal, but if I was confident that I could hit the heart, then I have no problem with it.
If any of you ever get to Anchorage Alaska, go by the local gun shops and ask for the video "No Land For The Timid" there is a scene shooting a Polar Bear with a 375 H&H and they shot this bear 11 times if I remember correctly with all shots in the shoulder or rib cage just behind the shoulder and this bear would not go down and stay.
A stoutly constructed bullet that is capable of extreme penetration (and if one does not miss judge the angle) is an extremely deadly shot. A bullet that travels the length of the body is very deadly very quickly..
I agree with Dave Wilson this is not a preferred shot at long range..
range it,check the wind, dial in correction, aim and only one shot
A few years back I had a nice buck scouted. Opening morning the deer stood up 100 yards out facing dead away. He slowly fed straight away from me for another hundred yards before disapearing into the brush. Funny thing is, it never occured to me to run one through from the tailpipe. Dunno if I'd take the shot if I had it to do over. Messy...
I did put an arrow through a skunk that showed me his rear target dot. Shut him off like you'd flicked a switch.
I've seen two deer shot in the base of the neck from the same angle. Nice, clean, and instant.
It's pretty rare that anyone would have to shoot a game animal in the butt. At long ranges I can't think of any reason for taking such a shot unless the animal is wounded and moving away. At closer ranges, I can't see messing up the guts even if it is a killing shot. If the animal isn't going to be eaten then I guess a humanely dead animal is a dead animal.
I've taken the butt shot twice that I recall in 36 years of hunting, both times on moose. On the one, the bull had been shot broadside through the lungs at 615 yds and then turned and headed away from me. Next shot through the hip / ball joint broke him down, with very little meat damage I might add. I was using a .338 215 gr Barnes X boattail bullet, back in 1994 before the Triple Shocks came out. Found the bullet laying against the stomach - luckily it didn't penetrate the stomach pouch. Only penetrated about 18-20 inches which surprised me. First shot was a killer but I couldn't know for sure at the time I fired my second shot.
Second moose was about 420 yards away and had been spooked by another bull and just kept moving away from me. I couldn't get him to turn, as he was already headed out and away at a quick pace. Rather than face the winter without moose meat I fired. Incurred some meat loss on the left ham. First shot wasn't a killer. The moose then turned broadside and I was able to hit him more properly. If you lose 10 pounds of meat on a moose with a shot to the ham, you still end up with 350 lbs of good meat, on an adult bull. Less on a 1 1/2 year old. More on a monster old bull.
Large bears might become cranky and maybe even a little naughty if shot in the backside with the wrong caliber/wrong bullet.It,s a long way to the boiler room from that angle.Large caliber and heavy bullets will do the job,.375,.416 and .458s.Doing this for any other reason than stopping a wounded animal is unethical and foolish,and more foolish than that would be taping it for all the non-hunting world to see.They should have more respect for the game they(hunt)!GRPB