I've always looked at "normal range" deer hunting and "long range" elk hunting as 2 different pursuits that require 2 different guns. I personally consider "long range" on game to be anything over 500 yards, mostly because most hunters can't hit their own ass that far. Honestly. A Seekins Havak or Fierce rifle in 28 Nosler would be my choice with the 195 EOL driven hard in quality handloads. For factory ammo, I would turn to Unknown Munitions. I don't think a rifle for 200 yd shots at deer is the same gun to use for 600 yd elk. I witnessed a Seekins PH2 in 28 Nosler on 3 elk this fall, 1 cow and 2 mature bulls. Ranges were from 480 to 730. All one shot quick, humane kills. Don't fool yourself into complacency after you own the gun, being more proficient than 95% of most riflemen out there will matter more than anything.