Or a going away shot that is somehow supposed to go through the back straps, the spinal column and out the sternum. Seems like too shallow an angle resulting in a deflection and not straight line penetration. One guy gets 12” penetration but expects 5’. What bullet gets you 5’ of penetration? Once again though thanks for sharing the data so we can see the results.
Evidently I need to clarify this since it seems to be causing some confusion….
Elk on a 60* slope below me. Shot once through the front quarters at 30 yards, elk turns and runs down hill away from the trail towards a major river following the herd. Elk goes into a small gully on an angle which changes the body position relative to me, as it gets to bottom.
60-ish yard shot with a rifle/bullet combo (300 RUM/180gr TSX) which I’d previously shot several elk with from onside shoulder through offside hip and had exits (and a couple bullet recoveries) at similar ranges.
Bullet placed expecting it to enter through spine and transverse the chest and come out through the bottom of the chest between the front legs based on the body position. Bullet instead turns 90* from line of travel and is stopped after 12” of arguably some of the softest muscle on an elk.
I find this discussion and comments here SUPER ironic to be having on this forum, where guys seem to fall in one of two camps - either its ‘14-16” of major tissue and bone trauma is enough to kill from a little rifle’ (which I fall squarely into) or the opposite end of the spectrum ‘I need a Big Super Magnum and a Stout Bullet in case I need to shoot through the paunch to get to the vitals on an important hunt’ - which I used to be.
I would think that shot on that species with that bullet is exactly what that cartridge was designed to do, and in the context of this thread I figure it falls directly in line with what the OP was asking - bullet placed properly but failed to do what was expected of it.
To see a bullet/cartridge combo that turned and stopped when impacting nothing but meat, that had on several occasions previously penetrated several feet of “heavy bone and rut thickened hide”

and meat, I thought that was interesting and worth relating - but only in the sense of it fell into the sometimes weird shit happens category. I fully expected based on previous experience with that bullet and cartridge combo that the bullet would smash through 2.5’ of elk and dig into the dirt. It didn’t. Had that been the only hole in that elk, it wouldn’t have been fatal.
Seemed to fit the context of the thread.