Sample of one but I took a large adult cow at just over 200 yards with my 22” barrel 6.5 Creedmoor using the 142 Nosler ABLR coming out at 2700. She was feeding, angled ever so slightly away. Slipped it in the crease on an uphill angle, bullet took out heart, lungs, destroyed the offside scapula and left about a quarter size exit wound.
She flipped, landed on her back and slid down the snowy hill about 50’, and was probably dead before she stopped sliding. There was a big streak of blood down her slide path. Dramatic DRT.
Based on that performance, I’d have absolutely no reservations about putting that same bullet through any elk out to your stated max of 600 yards with my 6.5 Creedmoor.
What powder/load? Swede performance.
As DF and others......the 130 NAB has been my go to in 6.5 for years, no complaints, accurate, deadly.
