Winchester White Box USA 223 Remington Ammo 45 Grain Jacketed Hollow Point

Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.

The Winchester 223 45 grain jacketed hollow point load from the White Box USA line pushes a lightweight JHP projectile at 3600 feet per second from test barrels, generating 1295 foot-pounds of muzzle energy. The 223 Remington cartridge—originally developed for military applications and standardized by NATO as 5.56×45mm—operates at chamber pressures suitable for both bolt-action and semi-automatic rifles when properly headspaced. This particular load uses a rearward-weighted bullet design to stabilize in flight and fragment on impact, making it a range and target option for shooters running AR-15 platforms or bolt guns chambered in .223. Winchester loads all USA White Box ammunition at their domestic facilities using Boxer primers and reloadable brass cases.

Performance at a Glance

The 45-grain jacketed hollow point achieves supersonic velocity through a combination of light projectile mass and optimized powder charge. Winchester specifies 3600 fps from a 24-inch test barrel; expect velocity drops of approximately 25-50 fps per inch of barrel length reduction. The G1 ballistic coefficient of 0.185 reflects the bullet’s relatively short bearing surface and hollow-point nose—adequate for ranges inside 300 yards where wind drift remains manageable. Brass cases carry Boxer primer pockets for straightforward decapping and repriming during the reloading process. The non-corrosive primer and propellant formulation leave barrel fouling that cleans with standard copper solvents and bore brushes.

Forty-round boxes ship in cardboard packaging with foam trays to prevent bullet setback during transport. The lightweight JHP expands and fragments reliably when striking soft media, though Winchester markets this load primarily for range and target work rather than duty applications. Review our complete Winchester 223 ammo inventory for additional grain weights and bullet profiles suited to precision rifle competition or varmint hunting.