Send it off to Kampfeld Customs. He does phenomenal work. You won't save too much weight though. Just to give you an idea, I recently sent off a long action magnum bolt to have everything possible lightened. I had the bolt handle webbed, the bolt fluted, the bolt shroud hexed, and I put a lightweight firing pin assembly and carbon fiber bolt knob on it. All together I shaved 2 ounces off the bolt. I think the only other thing you could do is to have the receiver slabbed, and I'm guessing that will only save another 2 ounces or so.