Hollowpoints are illegal for military use against enemy combatants per the Geneva convention. I guess it’s all right for use against your own citizens though. I personally prefer steel core FMJ anyways.
I have looked at the terminal results of the green bullets. When regular bullets were gone off the shelves all that were left were the high dollar stuff like the Barnes Triple shocks.
In all honesty there is certain terminal ballistic pluses in these all copper bullets, controlled penetration, expansion and integrity, much more than traditional lead based bullets.
For hunting big game they are now my main choice. They require certain rates of twist and velocity, but the results are far better than the best lead bonded trophy or A frame bullets. And the penetrate barriers quite well, not an AP round but they expand only when meeting a hydraulic substance like flesh.