Your trying to sound cocky, hollowpoint is the worst ammo to use against deathclaws. It multiplies their DT (which is ~20 IIRC) by x2 or x3, and only increases your damage by like x1.6. Worst ammo to use. Use armor piercing ammo, to avoid their high DT.
Dont you 2 shot them using normal ammo? I only say hp cause its special ammo and it does more damage.
I will admit all day deathclaws are very hard at low levels but when you become a killing god in the mid 30s they are jokes, if you see a pack of them in the distance you can kill at least 2 before they even get into vats range