I've shot several elk with both. Regular AB will pass though most of the time, smaller wound channel but killed every elk i shot with them in 1 shot.
LRAB's are softer, general front half of bullet will fragment and bonded core will stay together. I have never had one of these pass through. Bonded core has been under off side hide.
ABLR's are more finicky to get to shoot that the AB's
I would use either with confidence, but for what OP asked I think the regular AB would be the best choice for the given distances.
Read, the Top Line slowly, Folks,.. SMALL, "Wound Channel" ! That's been, MY experience, too and an Elk "walking around", AFTER being hit at, 60-70 Yards out of, a .270 WSM at, a muzzle Velocity of 3,140 FPS with, a 140 A B. ( "Boiler room", shot ).
My son had, "problem's" with, ELD- X's that, penetrated well at, 250 yards, but, ANOTHER, "Hard" Bullet, that was, a SLOW, "Killer" and a follow up shot, was needed ! WE are going to use, Bergers from now on and stay with, the "Boiler Room", shots !
The reg AB's are FINE for, high "Shoulder / Spine" shots as, they do penetrate, well !