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Winchester Super-X has been built on the same reputation since 1922 and these .223 rounds live up to that legacy. The 55-grain boat tail hollow point design delivers the kind of accuracy that keeps you competitive at the range while working well for varmint control. What makes this load interesting is how the hollow point cavity works. The opening exists because molten lead gets poured through it at the factory, which distributes the core evenly across the bullet. Paired with the thin, concentric jacket, this creates the geometry that makes these rounds punchy through a chronograph and consistent downrange.
The tapered boat tail base does real work here. It cuts drag in flight, which helps the bullet stay faster and gives you a flatter trajectory. That velocity retention means more energy delivery at practical hunting and shooting distances. You're looking at a muzzle velocity around 3165 fps, which is standard for 55-grain factory loads but effective for what this round is designed to do.
These come in brass cases with Boxer primers and non-corrosive powder, which means you can reload them if you want to stretch your ammunition supply. Reloading enthusiasts appreciate Winchester brass for its consistency and durability through multiple loading cycles. The American-made construction means no steel in the bullets and no corrosive compounds in the primers.
The 55-grain weight hits the sweet spot for rifles with standard twist rates. Whether you're pushing paper at 100 yards or running prairie dog control, this load runs smooth through ARs and bolt guns without cycling issues. The BTHP projectile was never designed to aggressively expand like some polymer-tipped varmint rounds, but instead produces a solid performing round that punches its weight.
Yes, you can safely fire .223 ammo in a rifle chambered for 5.56 NATO, as the round will fit in the chamber. However, the two cartridges are not identical despite their similar dimensions, so understand that feeding and accuracy may vary rifle to rifle. Check your firearm's manual or contact the manufacturer for specific compatibility guidance.
Absolutely. These come in brass casings with Boxer primers and non-corrosive powder, which makes them ideal for reloading. Winchester brass has a solid reputation for consistency and durability through multiple reload cycles.
The 55-grain bullet performs well across standard twist rates including 1/7, 1/8, and 1/9. While it will still function in other twist rates, performance can be impacted. Most modern ARs and rifles ship with one of these standard twists, so you should be good to go.
The hollow point cavity in this BTHP design isn't primarily designed for terminal expansion like some hunting rounds. The opening exists because the lead core gets poured through it during manufacturing, which creates an evenly distributed core. This geometry actually promotes better accuracy through the combination of the hollow cavity and thin jacket, making it more of an accuracy round than an expansion-focused round.
| Caliber/Gauge | .223 REM/5.56 NATO |
|---|---|
| Case Material | Brass |
| Cost per Round | 1.10 |
| Grains | 55 gr |
| Length | 2.4000 |
| Manufacturer | |
| Manufacturer Part Number | W223HP55 |
| Product Type | Boat Tail Hollow Point |
| Shipping Weight | 0.525 |
| Units per Box | 20 |
| UPC | 020892230552 |
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