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Speer
The Speer Grand Slam 338 caliber 250 grain JSP bullets are a proven choice for reloaders building rifle ammunition for medium to large game hunting. Dating back to the 1970s, these 338 diameter projectiles have earned a reputation among hunters who prioritize bullet toughness and weight retention—two critical factors when taking shots at distances or on game that demands reliable performance. If you're handloading rifle cartridges like the 338 Winchester Magnum or 338 Lapua Magnum, these bullets deliver the kind of consistent expansion and penetration that separates a clean harvest from a wounded animal.
What sets the Grand Slam apart is its internal construction: a tapered, precision-drawn jacket fused to the core through Speer's Hot Cor process, plus internal flutes that promote controlled expansion. This jacket-and-core fusion is designed to expand symmetrically and consistently when it hits bone or muscle, maintaining enough mass to drive deep into the vitals without shattering on impact. The result is the kind of stopping power that serious hunters expect from a premium hunting bullet.
Reloaders appreciate the Grand Slam's track record—decades of field-proven performance mean less guesswork when you're developing loads. Whether you're preparing ammunition for elk, moose, or other large game, the 250 grain weight in 338 diameter offers the ballistic foundation for effective hunting loads. These bullets are built for accuracy and reliability, not marketing hype.
| Caliber | 338 |
| Bullet Diameter | 338 Diameter |
| Grain Weight | 250 Grain |
| Bullet Type | JSP (Jacketed Soft Point) |
| Brand | Speer |
The Speer Grand Slam 338 caliber 250 grain bullets are sized for standard 338 diameter rifle cartridges, including the 338 Winchester Magnum, 338 Lapua Magnum, and other 338 rifle rounds. Always consult your reloading manual and firearm documentation to verify compatibility with your specific cartridge and rifle.
Yes. The 250 grain weight and JSP design of the Grand Slam are intended for hunting applications where controlled expansion and deep penetration are required. The internal flutes and jacket-core fusion are engineered to deliver consistent, symmetrical expansion on impact—the hallmark of a hunting-grade bullet.
These are reloading components—projectiles only. You will need to load them into cartridge cases with powder and primers using proper reloading equipment and procedures. Always follow established reloading manuals for your specific cartridge and firearm.
The Speer Grand Slam line was introduced in the 1970s and remains in production today, reflecting its enduring reputation for reliability and hunting performance.
Speer
The Speer Grand Slam 338 caliber 250 grain JSP bullets are a proven choice for reloaders building rifle ammunition for medium to large game hunting. Dating back to the 1970s, these 338 diameter projectiles have earned a reputation among hunters who prioritize bullet toughness and weight retention—two critical factors when taking shots at distances or on game that demands reliable performance. If you're handloading rifle cartridges like the 338 Winchester Magnum or 338 Lapua Magnum, these bullets deliver the kind of consistent expansion and penetration that separates a clean harvest from a wounded animal.
What sets the Grand Slam apart is its internal construction: a tapered, precision-drawn jacket fused to the core through Speer's Hot Cor process, plus internal flutes that promote controlled expansion. This jacket-and-core fusion is designed to expand symmetrically and consistently when it hits bone or muscle, maintaining enough mass to drive deep into the vitals without shattering on impact. The result is the kind of stopping power that serious hunters expect from a premium hunting bullet.
Reloaders appreciate the Grand Slam's track record—decades of field-proven performance mean less guesswork when you're developing loads. Whether you're preparing ammunition for elk, moose, or other large game, the 250 grain weight in 338 diameter offers the ballistic foundation for effective hunting loads. These bullets are built for accuracy and reliability, not marketing hype.
| Caliber | 338 |
| Bullet Diameter | 338 Diameter |
| Grain Weight | 250 Grain |
| Bullet Type | JSP (Jacketed Soft Point) |
| Brand | Speer |
The Speer Grand Slam 338 caliber 250 grain bullets are sized for standard 338 diameter rifle cartridges, including the 338 Winchester Magnum, 338 Lapua Magnum, and other 338 rifle rounds. Always consult your reloading manual and firearm documentation to verify compatibility with your specific cartridge and rifle.
Yes. The 250 grain weight and JSP design of the Grand Slam are intended for hunting applications where controlled expansion and deep penetration are required. The internal flutes and jacket-core fusion are engineered to deliver consistent, symmetrical expansion on impact—the hallmark of a hunting-grade bullet.
These are reloading components—projectiles only. You will need to load them into cartridge cases with powder and primers using proper reloading equipment and procedures. Always follow established reloading manuals for your specific cartridge and firearm.
The Speer Grand Slam line was introduced in the 1970s and remains in production today, reflecting its enduring reputation for reliability and hunting performance.
