brett1868 wrote:Maybe if you wanted to lighten a high BC projectile you could use a cast aluminium core to reduce the weight in relation to size. The Hornady 750gr 50cal AMAX projectiles use such a core made from aluminium to keep projectile weight down while achieving a BC of 1.050 with a length over 2". While the cast aluminium projectile may not be feasible, you could use it as the base to custom build a specific length and weight around that will work.
I'm doubtful you could get the precision required for balance in a home casting setup to achieve the above though?