I used to have a set of pics just of 140 Bergers through elk shoulders but I lost a lot of my photos on a drive I can't access to anymore, they work just fine I still am always ready for a second shot regardless of what I'm shooting but my confidence is high with the 140, more so than the 215 honestly but similar to the 230.
Elk do not get far with a shot to the crease mid way up or lower, that's where we have kids shoot elk with a 223, they are not very tough to kill with a lung hit, they need a LOT of air to move that much body. I've tracked down a lot more elk shoulder hit than I have lung hit!!