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The Swift Scirocco II in .257 diameter is a 100 grain bonded bullet built around a thick, tapered pure copper jacket and a lead core locked in place with Swift's proprietary bonding process. That construction is what separates it from older tipped bullets that tend to shed weight and come apart on impact. The signature black polymer tip resists deformation in the magazine and gets expansion started cleanly, while the secant ogive and 15 degree boat tail base give it the aerodynamic profile that keeps velocity and energy up at distance. With a G1 ballistic coefficient of .429 and a sectional density of .216, it shoots flat and bucks wind better than most 100 grain .25 caliber options.
This bullet is a natural fit for the whole family of quarter-bore cartridges, from the .257 Roberts and .25-06 Remington up through the fast .257 Weatherby Magnum. It expands at impact velocities down to around 1,750 fps yet stays together at velocities as high as 3,200 fps, so it handles both close shots and long pokes without folding up or pencil-through failures. Hunters report deep penetration and wide, consistent mushrooms on deer, pronghorn, and even elk, with weight retention typically landing around 80 percent.
One thing worth knowing: these bullets like a little room to breathe. Because of the thick jacket and bonded core, they often shoot best seated well off the lands rather than jammed close, and plenty of handloaders see groups tighten dramatically once they find the right jump. Give seating depth some attention during load development and this bullet rewards the effort, with many rifles printing sub-MOA once it's dialed in.
Each box contains 100 bullets ready for your press. This is a component projectile, not loaded ammunition, so you'll need your own brass, powder, and primers to put together a finished round.
This .257 diameter bullet works across the quarter-bore cartridges, including the .257 Roberts, .25-06 Remington, and .257 Weatherby Magnum. It's a general purpose and long-range hunting bullet suited to medium and large game when loaded in appropriate cartridges. The high ballistic coefficient makes it especially well matched to faster, flatter-shooting rifles.
Yes. The lead core is bonded to a thick, tapered pure copper jacket using Swift's proprietary process, which keeps the core and jacket together on impact. That bonding is what gives it high weight retention, usually around 80 percent, and lets it penetrate deep even through heavy bone.
These bullets tend to prefer a generous jump to the lands rather than being seated close, a trait they share with thick-jacketed and mono bullets. Many handloaders find accuracy tightens up considerably once they back the seating depth off and experiment with the gap. It's worth spending time on seating depth during load development before giving up on them.
This is a component bullet for handloading, not finished ammunition. You'll need your own brass, powder, and primers to assemble a complete cartridge. Each box holds 100 projectiles ready to load on your press.
| UPC | 713351761000 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 761000 |
| Shipping Weight | 1.4625 |
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