Only if you’re you. And 400 yards is an impossible shot for 99% of the public that have guns/optics capable of ethically making that shot. The reason; no place to actually practice at that distance. Almost all shooting ranges are 100 yards.
I have never had to stretch a shot that far on an elk. 200 is easy peasy with the right load and realistically you should be able to get them well under that. Bow hunters take them at 25 yards all the time as do hand gunners.
400 yard shots are more of a testament to great marksmanship than it is to hunting.
I shot the only elk I have taken with a bow at about 8 yards.........