Drew archery elk mid Sept. and rifle deer on the ranch, unit 55 northern NM. I have 1 archery tag and 1 rifle tag both elk during peak rut for sale. www.screaminbulloutfitters.com
As an Outfitter in NM, Dr. Vette is right, my clients have killed elk with rifles from 25yds out to 700 yds. Most of them use 300 win mags or 7mm's and do just fine.
I dont know if youve looked into the 7mm made by grey bull precision. Been shooting it lately, sweet! as an outfitter here in NM, works excellent on elk far out to 1400 yds.