Lapua’s .223 Remington 55-grain full metal jacket load (brand part no. 4315042) brings the Finnish manufacturer’s reputation for tight tolerances to an everyday range and training round. Lapua builds every case and bullet to exacting dimensional standards, so chamber pressures and muzzle velocities stay consistent from round to round instead of drifting across a box. The 55-grain FMJ bullet is a standard training weight for .223 Remington and 5.56 NATO rifles, reliable in AR-platform carbines and bolt guns alike. Lapua has built its name on precision ammunition and components trusted by hunters, competitors, and military users worldwide, and this loading carries that manufacturing discipline into a practical range round. Twenty rounds ship per box, cased in lots of 600 for shooters who put in serious range time.

Key Specifications

• The chambering is .223 Remington/5.56 NATO, standard for AR-platform rifles and .223 bolt guns.
• The bullet weighs 55 grains, a standard training weight for the caliber.
• The bullet is a full metal jacket, built for reliable feeding and consistent flight rather than terminal expansion.
• Every round is built to Lapua’s precision manufacturing standard, holding tight tolerances for consistent pressures and velocities.
• Lapua’s ammunition is distributed in the U.S. by Capstone Precision Group, formed in 2017 to bring together premium precision ammunition brands under one roof.
• Lapua operates as part of the Nammo Group, a parent company that backs its precision reputation with shared quality-control standards.
• Cost runs about $1.76 per round, reflecting Lapua’s premium manufacturing quality.
• Each box holds 20 rounds, a standard range quantity.
• Case lots total 600 rounds, sized for shooters who train frequently.

Frequently Asked Questions

Is this a match or a practice load? It’s a full metal jacket practice and range loading, built to Lapua’s manufacturing standards for reliable function and consistent impact.

Will this cycle in an AR-platform rifle? Yes, it is loaded to standard .223 Remington/5.56 NATO specifications for reliable function in AR-pattern rifles and bolt guns.

How many rounds are in a box? Each box holds 20 rounds, with case quantities of 600 for high-volume range use.

Buy Lapua .223 Remington 55gr FMJ Ammo

Lapua’s name carries weight among precision shooters for a reason, and that manufacturing discipline shows up even in a straightforward FMJ training load. It is the round to reach for when you want match-brand consistency without match-grade pricing. Order from our rifle ammunition selection, made by Lapua, and it ships fast from our Lubbock, Texas gun shop.