I have only shot two hinds with the 139gr 6,5 Secenar L at 385 and 407 yds.
Muzzle speed was 2,880 fps from a 6,5x57R.
Hit them both well centered in the ribs, right behind the shoulder, which they did not touch.
Both run for 300+ yards and could not have found them without my Bavarian Mountain Blood Hound.
They left no visible blood spoor, just a few drops and some hair where they were standing.
Butchering them showed evidence of very little damage to the lungs. One broke one rib on its way out, the other broke two.
I know the sample is tiny but I did not shoot any more at game after that.
Given how well they seem to work for others, I suspect that could have been a faulty lot but I did not care to insist and try a different one, as many other good options as there are.