First of all don't over think it. Yes elk are tougher than deer, but they ain't bullet proof. Use what your rifle likes the best period. Everything you mentioned on hand is more than adequate for the task of killing elk. My buddies dad kills an elk on a regular basis using 130 grain core-lokt .270 in an old Remington pump, and rarely needs more than one shot.
I've seen elk killed by a wide variety of different cartridges big and small. As long as the elk isn't overly worked up it should be fairly easy to put down.An elk that has its adrenalin up from being chased around by several hunters or a rutted up bull can surely be tough to kill. You just need to be aware of what condition your animal is in before pulling the trigger.
I've seen elk killed by a wide variety of different cartridges big and small. As long as the elk isn't overly worked up it should be fairly easy to put down.An elk that has its adrenalin up from being chased around by several hunters or a rutted up bull can surely be tough to kill. You just need to be aware of what condition your animal is in before pulling the trigger.