Elite | 5.56mm | 77GR HPBT

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Elite Ammo - 5.56mm 77GR HPBT

This 77GR Boat Tail Hollow Point ammunition is produced for the Army Marksmanship service rifle team.
This ammo is designed for extreme accuracy even at 600 yards.
Tested to military standards though match grade rifles and devices. 
Bullet: 77GR BTHP

Velocity: 2800 FPS ±

Overall Length (OAL): 2.245 ± .005” 

USE/SPORT: Precision Rifle Shooting
Box: 50 Rounds
Case: 1000 Rounds

.223 Remington –v- 5.56 NATO

The .223 Remington and 5.56x45 NATO cartridges are very similar, and externally appear the same. The differences lie beneath the surface.

The 5.56 case has thicker walls to handle higher pressures, meaning the interior volume of the case is smaller than that of a .223. This will alter the loading data used when reloading 5.56 brass to .223 specs. Some 5.56 loads have a slightly longer overall length than commercial .223 loads. 

The significant difference between the .223 Rem and 5.56 NATO lies in the rifles, rather than the cartridges themselves. Both the .223 and 5.56 rounds will chamber in the rifles designed for either cartridge, but the critical component, leade, will be different in each rifle. The leade is the area of the barrel in front of the chamber prior to where the rifling begins. This is where the loaded bullet is located when a cartridge is chambered. The leade is frequently called the “throat.”

On a .223 Remington spec rifle, the leade will be 0.085”. This is the standard described by the Sporting Arms and Ammunition Manufacturers’ Institute, Inc. (SAAMI). The leade in a 5.56 NATO spec rifle is 0.162”, or almost double the leade of the .223 chambers.

A shorter leade in a SAAMI spec rifle creates a situation where the bullet, in a 5.56 NATO round, when chambered, can contact the rifling prior to being fired. By having contact with the rifling prematurely (at the moment of firing), chamber pressure can be dramatically increased, creating the danger of a ruptured case of other cartridge,/gun failure.

 The reverse situation, a .223 Rem round in a 5.56 NATO gun, isn’t dangerous. The leade is longer, so a slight loss in velocity and accuracy may be experienced, but there is not a danger of increased pressures and subsequent catastrophic failure.

11 Reviews

  • 5
    Elite 5.56 77 gr hpbt

    Wanted to send you a comparison review on your 77 gr 556 ammo. All rounds fired from 18.1” Bartlein 7.7 twist barrel. With Compass Lake Engineering chamber. AR15 platform. Nightforce ATACR 4-16x set on 16x. Fired from concrete bench with Sinclair front rest and rear sandbag. 40 degrees air temperature. 980’ elevation. Chronograph Garmin xero c1 pro. Five shot groups. Measured with BallisticX program. First group cold, clean barrel. Black Hills mk262 77 grain Sierra bthp. 2784 fps ave ES 56.6 SD 18.3 group size .831”. Group #2 Sellier & Bellot 77 gr bthp. 2782 fps ave ES 25.8 SD 9.5 group size .818” Group #3 IMI 77 gr bthp 2723 fps ave ES 53.0 SD 17.7 group size .714” Group #4 Atlanta Arms 77 gr bthp 2846 fps ave ES 44.1 SD 15.8 group size .533” Highest velocity and best group of the day with your ammunition. Will be ordering another 1000 rounds as soon as it becomes available. Thanks

  • 5
    Elite 77

    As good as advertised

  • 5
    77 grain elite

    Used in my AR out to 650 yards with great accuracy

  • 5
    Good Stuff! - Elite 5.56 77GR BTHP

    This round proved to be consistently reliable during competition shooting at distances out to 500 m. Good Stuff

  • 5
    Reliable and accurate to 700

    I bought this ammo for a class where we were expected to, and did, learn how to hit difficult shots at ranges up to 700 yards. This ammo was extremely and reliable in real conditions. Consider me a loyal customer now.

  • 5

    Ran great! Believe it created a bigger fireball than my other ammo

  • 5
    223/556 elite

    Posted by Unknown on Mar 28th 2021

    Used in mystery mountain 3 gun match for long range. Worked well

  • 5
    77gr BRHP

    Finally put some rounds down range with it today. Only out to 50, but holes were touching with a fairly quick 20 rounds. Got lightninged out, but can’t wait to take it out to 500.

  • 5

    Consistently sub-moa at 100 and 200 yds out of Rosco 13.7" Purebred barrel with Geissele REBCG. Highly recommended, will purchase again.