IMI Razor Core 5.56x45mm NATO Ammo 77 Grain Sierra MatchKing Hollow Point

IMI Razor Core 77 grain ammo pairs a proven bullet with match-grade consistency for serious shooters. This load uses genuine Sierra MatchKing hollow point ammo construction for tight groups downrange. Additionally, this open tip match rifle ammo design improves accuracy over standard ball loads. It also qualifies as long range 5.56 precision ammo thanks to its heavier bullet profile. Furthermore, this AR-15 competition ammo option suits shooters who demand more from every trigger pull.

IMI Precision Rifle Ammo Specifications

• Caliber: 5.56x45mm NATO
• Bullet Weight: 77 Grain
• Bullet Type: Sierra MatchKing Hollow Point Boat Tail (open-tip match)
• Case: Brass, boxer-primed, reloadable, IMI manufactured
• Muzzle Velocity: Approximately 2,750 fps
• Case Options: 240 or 500 rounds
• Application: Precision shooting, long-range competition, AR-15 platforms with fast-twist barrels

Sierra MatchKing Hollow Point Ammo Built for Accuracy

Sierra MatchKing hollow point ammo has earned a reputation among competitive shooters for exceptional consistency. Because the bullet’s boat-tail design reduces drag, it holds velocity better at extended range. Also, the open-tip hollow point is not designed to expand like a hunting bullet, so this load stays a target and competition round. Shooters can browse the full rifle ammo lineup for other precision options.

Open Tip Match Rifle Ammo: IMI Precision Rifle Ammo Design

Open tip match rifle ammo like this IMI load uses a small aperture at the bullet’s nose left over from the manufacturing process. As a result, this design has nothing to do with hunting-style expansion. For a lighter-format alternative, see our IMI M193 55 Grain FMJ load, or compare against the full 5.56x45mm NATO ammo lineup.

Long Range 5.56 Precision Ammo for Extended Distance

Long range 5.56 precision ammo like this 77 grain load resists wind drift better than lighter 55 or 62 grain bullets. In addition, the heavier weight carries energy further downrange. Handloaders can pair recovered brass with components from our 223 Remington ammo section when sourcing supplies.

AR-15 Competition Ammo for Serious Shooters

AR-15 competition ammo like this IMI load rewards a fast-twist barrel with genuinely tight groups. In short, this IMI precision rifle ammo rounds out a well-stocked match lineup. For a dedicated hunting option instead, see our IMI M855 62 Grain Ammo Can load.

IMI Precision Rifle Ammo FAQs

What twist rate works best with this ammo?

IMI Razor Core 77 grain ammo needs a fast 1:8 or 1:7 twist rate to stabilize properly. Specifically, a 1:7 twist is the safer choice for consistent accuracy with this bullet weight. Slower twists like 1:9 or 1:12 will not stabilize this heavy bullet well. Therefore, check your barrel’s twist rate before choosing this load.

Is this ammo safe to fire in a 5.56 chambered AR-15?

Yes, IMI Razor Core 77 grain ammo is loaded to 5.56x45mm NATO specifications and is safe in any properly headspaced 5.56 chamber. Additionally, it also safely cycles through .223 Wylde chambers built for heavier bullets. However, shooters should verify their barrel has a fast enough twist rate first. Always check your rifle’s markings before firing.

Does this IMI precision rifle ammo use reloadable brass?

IMI Razor Core 77 grain ammo uses boxer-primed brass cases that are fully reloadable. As a result, handloaders can recover and reuse spent cases after firing. In addition, the Sierra MatchKing bullet is a popular choice among reloaders seeking match-grade consistency. This makes it a solid choice for precision handloading.

What velocity does this ammo produce?

IMI Razor Core 77 grain ammo produces approximately 2,750 feet per second from a 20-inch test barrel. Specifically, velocity runs somewhat lower from a shorter 16-inch AR-15 barrel. Therefore, shooters should chronograph their own rifle for exact data. Always review safe handling guidance from the National Shooting Sports Foundation before heading to the range.

How should I store this IMI precision rifle ammo?

IMI Razor Core 77 grain ammo should be stored in a cool, dry place away from direct sunlight. In addition, keeping ammo sealed in its original packaging prevents moisture exposure. Therefore, a sealed container or ammo can adds extra protection long term. Proper storage preserves reliable ignition for years.

What does “77gr OTM” mean?

“77gr OTM” is shorthand for 77 grain Open-Tip Match — the exact bullet weight and construction used in IMI Razor Core 5.56x45mm NATO ammo. The open-tip design is a hallmark of Sierra MatchKing bullets and is built for accuracy, not expansion, making this a favorite for precision AR-15 shooters searching for 77gr OTM ammo for sale.

Is IMI Razor Core the same as IWI Razor Core?

No — this is genuine IMI (Israel Military Industries / IMI Systems) ammunition. It’s sometimes searched as “IWI Razor Core” because IWI (Israel Weapon Industries) is a separate, similarly-named Israeli firearms manufacturer. Liberty Ammo Supply carries the authentic IMI Razor Core 77 grain load, correctly listed under the IMI brand.