Chinchaga bullets made a 25 cal, rebated I think, boat tail bullet. A friend of mine shot a WT with one from a 250 savage ai and it died. The jacket separated iirc. These bullets were last being made by a guy from central AB, Ponoka.
Horrible when then animal dies yet you think you didn’t get the performance or weight retention you think you should have. Horrible when the bullet did what it was supposed to yet failed your expectations, yet killed. As long as I get enough penetration I am happy with shrapnel enlarging the wound channel and the bullet fragmenting. Recovering a bullet, even partial, is success. If it wasn’t how would I recover such, you don’t recover off live animals.