Personally I have not shot a deer yet with it (using my Mossberg MVP in 5.56) but I have seen what it does though to deer. Absolute carnage done to the deer's vital organs. Now how that translates to the two legged kind I do not know. But I will say I do not use it as my self defense ammo in my AR. That goes to mk262 mod1
It is too fast a twist rate for frangible hunting bullets such as soft points. They tend to fly apart. The 1 in 7 twist is ideally suited to self defense applications, using the preferred bullets FMJ and JHP. The 1 in 7 twist is mil-spec.