Great mule deer and antelope bullet, too light for elk - Sierra Bullets .30 Caliber 165 Grain SBT GameKing Rifle Bullets

This is my go to bullet for my 30-06 loaded to ~2850 fps. Really good for antelope and mule deer out to 350 yards, but after shooting an elk with it this year, I need something more substantial. Recovered 2 bullets which retained ~72% weight with less than desired penetration. One bullet separated and was found in the heart, the other was found opposite side hide after a spine shot from 200 yards.