Winchester Varmint 223 Remington Ammo 55 Grain Winchester Ballistic Silvertip Polymer Tip Box of 20

Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.

Winchester 223 Remington 55 Grain Ballistic Silvertip ammunition combines a boat tail base with polymer tip construction for flat trajectory and rapid expansion on varmint-size targets. The 55-grain projectile exits at 3240 fps with 1282 ft-lbs of energy—velocity sufficient to deliver fragmentation on prairie dogs, coyotes, and similar game at extended range. Winchester loads this round in nickel-plated brass with Boxer primers, making spent cases suitable for reloading after field use.

Performance Profile

The Ballistic Silvertip projectile uses a polymer tip seated over a engineered jacket designed to fragment rapidly upon striking soft tissue. The boat tail base (.267 G1 BC) reduces drag in flight, maintaining velocity downrange and minimizing wind drift across open terrain. Nickel-plated cases resist corrosion during storage and extract cleanly in semi-automatic rifles. Lubalox coating on the bullet reduces fouling in the bore after sustained strings of fire.

This load runs reliably in AR-15 platforms with standard 1:9 or faster twist barrels. The 55-grain weight stabilizes fully in most common twist rates, and the supersonic velocity profile maintains fragmentation characteristics out to typical varmint engagement distances. For additional Winchester 223 ammo options, review other grain weights and bullet profiles suited to your rifle’s specific twist rate and intended game.