I haven't hunted elk but after having good success with 140gr VLD's on deer in my 6.5x55 decided to try them or similar bullet in my 7x57, Custom Ruger M77 MKII action, 24" Lilja barrel with 1:9 twist. I settled on the 162gr Hornady A-max (haven't tried the VLD in this caliber yet) which has performed extremely well on Deer at close and long range. I agree with bigsqeeze, "VLDs kill game using a different method or concept", and also the A-max. Very quick kills in my experience. These 2 bullets are very effective when impact is below 2600 fps (and good shot placement) and thus far have proven to be a great all-round bullet on medium game for the slower 7x57. I'm not suggesting that this can automatically be extrapolated to CPX3 game at higher impact velocities, but just my personal experience with these 2 similar bullets.

"Good judgment comes from experience but unfortunately, experience is often derived from a series of bad judgments"