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If you've got a .257 Weatherby in your safe, you already know why Roy Weatherby loved this cartridge so much. The combination of high velocity and devastating trajectory makes it a go-to choice for extended-range hunting. These Select loads make it easy to get exactly that performance without handloading.
Weatherly Select ammunition was developed with one mission in mind: flat shooting, hard hitting, and accurate. This load delivers on all three. Running the 100-grain Hornady InterLock at 3605 feet per second, you're looking at the kind of velocity that keeps trajectory flat and energy levels high out to where most hunters take their shots.
The 100-grain InterLock brings proven hunting performance built on decades of field experience. The exposed lead tip initiates expansion immediately, while the exclusive InterLock ring mechanically locks the core and jacket together as the bullet expands. This design preserves mass and energy retention, meaning you get deep penetration and consistent performance whether you're at 50 yards or 300. The secant ogive profile also helps this bullet fight wind better than conventional designs.
These rounds come in reloadable brass cases with 20 rounds per box. New production, non-corrosive ammunition means consistent performance across the board, and the brass is worth keeping around if you handload. The load specifically suits medium game like whitetail and mule deer, and it'll work on antelope and hogs as well. You get the kind of practical hunting ammunition that works reliably in the field without requiring special storage or handling.
The 100-grain InterLock load is designed for medium game including whitetail deer, mule deer, antelope, and wild hogs. The controlled expansion of the InterLock bullet makes it effective on these species, and the flat trajectory of the cartridge lets you stretch your effective range significantly compared to slower calibers.
Yes. These rounds come in reloadable brass cases with Boxer primers, making them well-suited for handloaders. The brass is quality Weatherby/Norma production, which maintains consistent dimensions for reliable reloading.
The .257 Weatherby delivers velocity and trajectory advantages over comparable cartridges like the .25-06 Remington, thanks to the magnum case design. At 100 grains, this load produces a flat trajectory that's excellent for open country hunting, and the InterLock bullet design provides controlled expansion at these high velocities. It's mild-mannered compared to larger magnums, making it easier to shoot accurately.
With proper shot placement and realistic rifle accuracy, this load is effective on medium game out to 400+ yards. The flat trajectory and energy retention of the InterLock bullet mean you won't need as much hold-over as slower cartridges, but wind management becomes increasingly important at extended distances.
| Caliber/Gauge | .257 Weatherby Magnum |
|---|---|
| Case Material | Brass |
| Cost per Round | 3.20 |
| Grains | 100 gr |
| Length | 6.5000 |
| Manufacturer | |
| Manufacturer Part Number | H257100IL |
| Model | |
| Product Type | InterLock |
| Shipping Weight | 1.31 |
| Units per Box | 20 |
| UPC | 747115437412 |
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