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The Remington Core-Lokt .338 Winchester Magnum 225 grain cartridge is built on decades of proven hunting performance. Since 1939, this bullet design has earned a reputation among serious hunters for what Remington calls the deadliest mushroom in the woods. The 225-grain weight sits right in the sweet spot for the .338 Winchester Magnum, balancing the deep penetration and sectional density needed for elk and moose with trajectory characteristics that keep the bullet working well at reasonable hunting distances.
The whole philosophy behind this round comes down to the bullet construction. A progressively tapered copper jacket is mechanically locked to a solid lead core, which prevents the jacket and core from separating on impact. This design allows the bullet to expand in a controlled manner rather than fragmenting or coming apart. The result is consistent weight retention and penetration that carries through muscle and bone without dumping all its energy in one spot. That's what makes the Core-Lokt philosophy different from some modern premium designs that prioritize rapid expansion.
Out of the box, you're getting 2780 fps muzzle velocity with 3860 foot-pounds of energy. At typical hunting ranges under 300 yards, that velocity holds up well enough to maintain expansion thresholds on game while still driving through. The reloadable brass and consistent Remington quality mean these rounds are as reliable on your tenth box as they are on your first. You get 20 rounds per box, which lines up with how most hunters stock their freezers.
If you're hunting elk, moose, or heavy-bodied deer where penetration matters more than explosive expansion, the Core-Lokt .338 Winchester Magnum does what it was designed to do. It's the sort of ammunition that works because the fundamental design is sound, not because it chases the latest ballistic trend.
Absolutely. The .338 Winchester Magnum is one of the most popular magnum cartridges for large American game, and the 225-grain bullet weight is the preferred choice among many elk hunters. The Core-Lokt's controlled expansion and penetration make it well-suited for elk-sized game at typical hunting distances. At 2780 fps with solid weight retention, this load has the energy and momentum needed for reliable performance on larger-bodied game.
The Core-Lokt's tapered copper jacket is mechanically locked to the lead core, which prevents jacket-core separation on impact. This design controls expansion rather than allowing it to happen all at once, resulting in deeper penetration with consistent energy transfer. It's a proven approach that prioritizes reliability and bone-breaking power over explosive expansion, making it effective across reasonable hunting ranges where velocity is still high enough for proper function.
Yes, these come in reloadable brass cases with boxer primers, so you can reload them after firing. This is useful if you plan to shoot multiple boxes through the same rifle and want to reduce costs on follow-up hunting seasons. Many handloaders appreciate having quality Remington brass on hand for their .338 Winchester Magnum rifles.
This 225-grain load performs best at typical hunting ranges under 300 yards, where velocity remains high enough to ensure reliable expansion and penetration on game. The .338 Winchester Magnum's moderate velocity compared to some faster magnum cartridges means recoil stays manageable, allowing most hunters to shoot accurately at practical hunting distances without excessive fatigue.
| Caliber/Gauge | .338 Winchester Magnum |
|---|---|
| Case Material | Brass |
| Cost per Round | 3.60 |
| Grains | 225 gr |
| Length | 6.5000 |
| Manufacturer | |
| Manufacturer Part Number | 22189 |
| Shipping Weight | 1.65 |
| Units per Box | 20 |
| UPC | 047700066509 |
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