Haven’t used on game yet but with the ammo shortage may be packing some 180 gr this year. They pattern well at the range and should work fine with well placed shots.
I've used Fusion in my 6.5 CM only on Whitetail and they have worked great, I've only ever had to use one bullet and the go down. I'd think they would work just fine on Elk with a well good shot placement.
Killed 6 pt last year at 340 yds. 300wsm with 150 grain. Bull rand 20 yards and tipped over. Recovered bullet, perfect mushroom. Way underrated bullet. PS, dont tell anyone.
I have used 150gr fusions in my 308 for many years killing elk,mule deer, whitetail. Very deadly bullet ,but I wouldn't use it to shoot long distances.