I know a lot of the guys I go to matches with that have 6.5's shoot the eld x's. Not entirely sure why, maybe they want to practice with what they're going to hunt with, I don't know. I personally use the 140 eld-m, but I have almost 1000 of them, and they work for me(and I don't hunt... Yet...)
I guess what I'm saying is, I know guys that use them, and get amazing groups at 600
Sent from my SM-G920V using Tapatalk