I would shoot them also in a very controlled environment like last guy said, (take me longer to type his name then my whole post). Just kidding!
If you decide to pull them, definately get one of the collet pullers as long as your winchester HPs aren't a round nose design. The collet pullers won't pull bullets with rounded sides. They need a straight area to grab ahold of or your wasting your money so it will also depend on how deep you seated your bullets in that sense.
adding this, the weight of the bullet will vary a couple tenths of a grain making it more impossible to try picking them out by weighing them.