Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For hunters pursuing elk, moose, or dangerous game at range, the Swift High Grade 338 Lapua Magnum ammo balances controlled expansion with deep penetration. This is 338 Lapua Magnum ammo loaded with the 250-grain Swift A-Frame bonded round nose bullet — a design that retains 95% of its weight through heavy bone and muscle. Each cartridge leaves the muzzle at 2900 feet per second and carries 4671 foot-pounds of energy, giving you flat trajectory to 400 yards and terminal performance through quartering shots. Swift manufactures this ammunition in small batches, hand-inspecting each round and water-tight sealing primer pockets to eliminate moisture intrusion in mountain and coastal hunts.
Built for the Field
The A-Frame bullet uses a bonded lead core partitioned by a thick copper jacket wall — the front half expands on impact while the rear half drives through tissue without separation. At 2900 fps, this 250-grain projectile maintains supersonic velocity past 1000 yards and retains over 2000 ft-lbs of energy at 500 yards, making it effective on heavy-bodied game where shot angles are rarely perfect. Swift chambers and gauges every case to SAAMI specifications, ensuring reliable feeding in precision bolt rifles. Brass cases are reloadable, and Boxer primers simplify decapping for handloaders who want to tailor velocity and seating depth to their specific rifle.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 338 Lapua Magnum |
| Bullet weight | 250 grains |
| Bullet type | Swift A-Frame bonded round nose |
| Muzzle velocity | 2900 fps |
| Muzzle energy | 4671 ft-lbs |
| Rounds per box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| G1 BC | 0.427 |
| Sectional density | 0.313 |
| Test barrel | 24 inches |
| Intended use | Hunting |
| Manufacturer | Swift |
This load is optimized for 24-inch barrels common in long-range hunting rifles. The 0.427 ballistic coefficient and round nose profile balance wind drift with terminal expansion at typical hunting velocities. For more 338 Lapua ammo options, including match and long-range variants, see our category page.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Follow the four universal rules of firearms safety at all times
- Verify state and local ammunition laws before ordering — some jurisdictions restrict magnum rifle cartridges or lead-core hunting bullets
- This product contains lead, a chemical known to the State of California to cause cancer and birth defects — review Proposition 65 warnings at P65Warnings.ca.gov
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