Some years ago it seems this bullet type was ridiculed by American writers for breaking apart. That is the problem with gun writers who don't test bullets in recovery media or kill lots of game with them before popping off in print.

IIRC, they have a dual core, yes? Hard lead alloy rear, soft pure lead front?

Most American writers seem to favor either mushrooming or monometal X-type bullets, and condemn bullets that allow portions to break off in the animal. As long as adequate penetration is obtained, and penetration does NOT seem to be a problem with this bullet, I don't see the problem with shedding some weight as it appers occured in 93's bullet.