I'll probably be a bit of an outlier here but I run a .270 Sherman with a 140gr Badlands Super Bulldozer 2 at 3,240fps MV. I shot a bull elk at 700 this year and had no doubts about its ability to do the job and it did. I shot another bull (different state) at 390. I also shot a doe antelope at 775 and the bullet performed exceptionally well. My wife also has a .270 Sherman but shorter barrel so MV is 3,060fps. She shot a cow at 500 without issue, a doe antelope and a buck mule deer each around 400. This bullet has been nothing short of fantastic.
Another rifle we have running a mono is my dad's 7mm Rem Mag with a 151gr Patriot Valley Arms Cayuga. My mom shot a bull at 675 and dumped him in his tracks. My cousin shot a cow at 700 and she only made it about 50 yards sprinting before she piled up. I wouldn't hesitate to use either of these bullets down to 1,800fps and still have reliable performance since they don't operate on an expansion model but instead on fragmentation causing secondary wound channels and the shank punching clean through giving an exit for a better blood trail (not that it's been needed for the short distance to death).
All said and done we shot 8 elk, 10+ antelope, and a muley with these 3 rifles this year.
For those of you interested in the ballistics of it, I've attached a chart of my rifle set to the atmospherics we typically hunt at. Needless to say, it still has plenty of energy and velocity for elk to 1,000 yards.
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