Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Hornady Custom 223 Remington 55 grain JSP is a factory-loaded cartridge designed for shooters who want the consistency of match-grade ammunition without the bench time of handloading. With a 55-grain jacketed soft point bullet moving at 3240 fps from a 24-inch test barrel, this load produces 1282 foot-pounds of muzzle energy and a G1 ballistic coefficient of 0.235. A jacketed soft point is a controlled-expansion projectile: the exposed lead tip initiates upset on impact while the copper jacket controls the expansion rate, making this load suitable for varmint hunting and medium-game applications where energy transfer matters. Hornady manufactures this ammunition in the United States using new brass cases, non-corrosive boxer primers, and their established quality control processes — each round is built to the same dimensional tolerances as their precision match lines.
Performance at a Glance
| Spec | Value |
|---|---|
| Caliber | 223 Remington |
| Bullet weight | 55 grains |
| Bullet type | Jacketed Soft Point (JSP) |
| Muzzle velocity | 3240 fps |
| Muzzle energy | 1282 ft-lbs |
| G1 ballistic coefficient | 0.235 |
| Sectional density | 0.157 |
| Test barrel length | 24 inches |
| Rounds per box | 50 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Range & Target |
| Manufacturer | Hornady |
The brass case and boxer primer combination makes these cases reloadable — save your brass for future handloading projects. This load functions in AR-15 rifles chambered in 223 Remington or 5.56 NATO (check your chamber markings and headspace) as well as bolt-action rifles. The 55-grain projectile stabilizes in 1:9″, 1:8″, and 1:7″ twist barrels. Browse the full Hornady 223 ammo catalog for additional bullet weights and profiles.
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 rules of firearm safety at all times — treat every firearm as if it is loaded.
- Verify current state and local ammunition laws before ordering — some jurisdictions prohibit soft-point projectiles or regulate ammunition purchases.
- This product contains lead, a chemical known to the State of California to cause cancer and reproductive harm (Prop 65) — wash hands after handling and ensure adequate ventilation when shooting indoors.
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