[big al hunter]

I agree with fiveinadime, read and learn from reloading manuals. I will try to start you in the right direction.

Bullet weight has very little to do with a given bullets accuracy. However a rifles twist rate will determine what bullets it will stabilize. Therefore it makes some bullet weights inaccurate in certain rifles. The heavier a bullet is, in a given caliber, the the more twist is needed to stabilize it. The 30-06 is usually rifled to a 1/10 twist rate. That means that the bullet rotates 1 time in 10 inches as it moves down the barrel. That will stabilize most 30 cal. bullets.

Heavier bullets tend to get more penetration. Needed for hunting larger animals. A heavier bullet will hold its velocity longer than a lighter bullet, if they are the same shape and caliber.

You will learn a lot more if you search the old posts with key words. Take some of the posts with a grain of salt, not everyone on here knows as much as they think they do. The general consensus is usually correct.