Gentleman
Jack O’ Connor proved the 270 Winchester over a lifetime of hunting Deer and Elk with it. Many times in print did he tell his story and adventures with it. Lets not forget that. On top of all that, I think one needs to practice with his firearm and let the two become one. I would suggest that you try this ammo for your Elk hunt.

Lll Hunter. Go to the library and get every book with Jack O’ Connor and read it. You will love the 270 afterwards. Sorry if you have already read them. I am just thinking you may not be familiar with him. He was the shooting editor for Outdoor Life for many years.

http://www.midwayusa.com/rewriteaproduct/821129

Good Hunting