Compairing 150gr and 165gr bullets in .308 dia
It comes down to sectional density for bullet performance with standard lead core bullets. I shoot 30-06s lightly loaded to 308 Winchester ballistics. I choose a standard lead core bullets in 165gr so that I have a better chance of the bullet holding together and giving me good penetration on a shoulder shot. Some shooters prefer the extra velocity/flatter trajectory you gain from the lighter 150gr bullet. I buy and shoot Nosler Ballistic tip bullets, these are sometimes blamed for over expansion in the 150gr selection. I have not had a problem using them on Deer in the 165gr selection. If I was shooting factory ammo, say Remington core-locks I would try to find your 308 Win in 165gr.