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IMI Ammo 5.56x45mm NATO Ammo 77 Grain Razor Core Sierra MatchKing Hollow Point - IMI556R
Rated 4.9 out of 5 across over 68 verified reviews and growing, this IMI Razor Core 77gr ammo is built around a 77 Grain Sierra MatchKing Hollow Point Boat Tail bullet. It is a match-grade 5.56x45mm NATO load from IMI Systems, made for precision shooting, duty use, and longer-range performance where consistency and wind resistance matter.
Why Shooters Choose IMI Systems 5.56x45mm NATO
- Match-grade projectile: Loaded with a 77 Grain Sierra MatchKing Hollow Point Boat Tail bullet, this IMI 77gr Razor Core load uses a respected precision rifle projectile design.
- 5.56x45mm NATO specification: Built to 5.56x45mm NATO pressure specification, this cartridge is intended for rifles chambered for that category.
- Precision-focused performance: Manufacturer-stated match-grade consistency supports shooters looking for repeatable results on the range or in duty-oriented training.
- Downrange advantage: The 77 grain hollow point bullet is stated to offer an excellent ballistic coefficient and reduced wind drift compared with lighter common loads.
- Brass-cased and reloadable: Brass cases and Boxer primers make this IMI ammo a practical choice for shooters who save reloadable cases.
- Verified ballistic specs: This load is listed at 2740 fps with 1283 ft lbs of muzzle energy.
- Flexible packaging: Available as a Box of 20 or Case of 500, giving shooters options for testing, range use, or stocking up.
What Customers Say
Customers rate this load 4.9 out of 5 across over 68 verified reviews and growing, with over 63 five-star ratings and growing.
Accurate 556 and it’s available. Ran very well of all 1/7 bbls. MOA for certain. Maybe sun or half in a better shooters hands. Can’t speak to terminal ballistics,.Haven’t popped anything with it yet. But it’s good accurate ammo. No chrono on it sorry.
Marco G.
Great power/velocity for a 77gr. Accuracy is good, but doesn't quite maximize the Sierra Matchking bullets. For the price was hoping it would be a little more comparable with match bullets. Still a string choice and a packs a good punch.
Andries E.
Over a buck a wack but THIS IS AWESOME , ACCURATE AMMO My SL8 manual states 50-70 grn. But these 77 grn. Hold true and are perfect. I just bought more today. Good Stuff!
William P.
What is the muzzle velocity of IMI Systems 5.56x45mm NATO 77 grain Hollow Point?
This IMI Systems 5.56x45mm NATO 77 grain Hollow Point load has a muzzle velocity of 2740 fps. It is also listed with 1283 ft lbs of muzzle energy.
What bullet is used in IMI Razor Core 77gr ammo?
This load uses a 77 Grain Sierra MatchKing Hollow Point Boat Tail bullet. The manufacturer also describes it as an Open Tip Match projectile, a design commonly selected for precision-focused rifle ammunition.
Is IMI 77gr Razor Core made for precision shooting?
Yes. IMI describes this Razor Core load as match-grade 5.56 NATO ammunition designed for precision shooting, duty use, and long-range performance.
What does 5.56x45mm NATO pressure specification mean for this ammo?
It means this cartridge is loaded to the 5.56x45mm NATO pressure specification stated by the manufacturer. Shooters should use it only in firearms marked for compatible 5.56x45mm NATO ammunition.
Is this IMI RazorCore load reloadable?
Yes. The verified specs list a brass case with a Centerfire / Boxer primer, and the manufacturer states the brass cases are reloadable.
What packaging options are available?
This IMI 77gr Razor Core is listed in a Box of 20 and a Case of 500. The box is useful for trying the load, while the case option fits higher-volume range use or stocking needs.
About IMI Systems 5.56x45mm NATO
IMI ammunition 5.56x45mm 77 grain Razor Core is a match-grade NATO cartridge using the Sierra MatchKing Hollow Point Boat Tail design. The bullet construction is commonly associated with precision rifle work because the open-tip match style is engineered for consistent flight rather than general hunting expansion.
This IMI 77 grain Razor Core load is positioned for precision shooting, duty use, and long-range performance. The heavier 77 grain projectile and stated ballistic coefficient help it hold steadier in wind than lighter common 5.56 loads, while the brass case and Boxer primer support reloadable use after firing.
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For shooters comparing premium 5.56x45mm NATO options, this IMI Systems Razor Core load combines a 77 grain match bullet, brass case construction, and verified ballistic specs. Choose the box for evaluation or the case option when adding bulk ammo from the IMI Systems lineup.
Technical Specifications
| Field |
Details |
| MPN |
IMI556R |
| UPC |
814326020051 |
| Manufacturer |
IMI Ammo |
| Platform |
556 Chambered Firearms |
| Ammo Application |
Precision Target / Competition / Self Defense |
| Ammo Type |
Razor Core Sierra MatchKing Hollow Point |
| Caliber |
5.56x45mm NATO Ammo |
| Grain Weight |
77 |
| Quantity Per Package |
Box of 20 / Case of 500 |
| Test Barrel Length |
Not Provided |
| Muzzle Velocity |
2740 fps |
| Muzzle Energy |
1283 ft. lbs |
| Ballistic Coefficient (G1) |
Not Provided |
| Case Type |
Brass Case |
| Primer Type |
Boxer |
| Corrosive |
No |
| Reloadable |
Yes |
| Lead Free |
No |
| Staked Primer |
No |
| Country of Origin |
Israel |
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