Need certainly depends on game hunted, impact speed, and shot placement. Lung shots, often not needed, shoulder or angling shots, perhaps much more so.
Cup/Core - unbonded certainly have taken ALOT of game. They can and will be effective in many situations. I see bonded giving one some 'insurance' - and price hike or not, the #'s of bullets fired ON game animals pales in comparison to practice shots IME...unfortunately!
