I am not a .270 fan, but that is my problem it is a good cartridge. However, are you willing to pass up shots that you have because your .270 will not give you the penertration you need? My self I do not want to let a trophy walk because I do not have enough rifle for the situation, I do not want a wounded critter, that is not hunting!!!! You are looking at a big, rather tough animal and I want an exit hole so if I have to trail it I have a good blood trail to follow. I do not want to have to wait for the perfect broadside shot that may never come. Remember hunting is not about using the minimum tool that can do the job under ideal conditions. We owe the game we hunt more then that, a wounded animal is not a consolation prize for almost. It is not what we hunt with it is how we hunt that matters, go with the .338 you will not be disapointed.