Im headed to montana next month. I bought a new 300 short mag. I used to shoot a 270 and the ammo my father and i shoot is federal premium with barnes triple shock 165 gr. ( he shoots a 300 wsm) The gun store said they dont offer it anymore. I see a lot of ballistic tips, but my dad tried them and it just pierces right through deer without expanding while the triple shock knocks them down. So now im stuck and dont know what to buy and if i should go 165 or 180. Either way i have to sight it in tomorrow. Any recommendations?