Bullet cost should never factor into an expensive hunt, that's peanuts. Why would you go low ball on a bullet? How many are you going to shoot on a hunt? If you rely on cast like I do, you absolutely can NOT over drive them, that's what many do not & will not ever understand. Drive them hard onto a hard surface & they will fail, we learned that back in the 70's in handgun Silhouette. When we softened the bullet a bit & slowed them down a bit, the Rams would go over. Run them fast & a hard alloy & the bullets would shatter. You need tough bullets, not brittle bullets. High antimony cast bullets on bone can break your heart, true story. Will they equal the best jacketed bullets, absolutely not.
