PERFORMANCE-ENHANCED RIFLE BULLET FOR BIG GAME. Grand Slam® was created by Speer® Bullets to improve the integrity and weight retention of their bullets. It has been one of the world's most respected and effective big game bullets. Grand Slam provides superior results, resulting in exceptional precision and real knockdown strength. A precision-drawn, tapered jacket ensures durable expansion. Internal flutes imply symmetrical and consistent expansion at the jacket opening. Because of the long nose profile, the shooting is flatter. When the game you're after is at the limit of your rifle's capabilities, you'll need a bullet that can handle it. Grand Slam is needed.