50 round box Black Hills Ammunition Factory New D556N3: 5.56mm Optimized 70 Grain Hornady GMX in 50 round boxes
A brand new offering from Black Hills! A Water Resistant 5.56 Optimized/"Brown-Tip" with 70 Grain Hornady GMX Bullet.
Black Hills Ammunition has added a special purpose load to its growing
5.56mm lineup. This load, utilizing the 70 grain Hornady GMX® projectile
is designed as a “barrier blind” round, meaning performance is
only minimally affected by barriers. It’s not armor-piercing, but
significantly out-performs conventional bullets in law enforcement
situations where officers may be required to engage deadly threats
in vehicles or behind light cover. It’s also optimum for hunting
requiring great expansion combined with deep penetration and nearly 100%
weight retention. This loading is designed for rifles with a rifling
twist of 1/7” or 1/8”. Penetration in ballistic gelatin consistently
runs 17-22”, with a wound diameter in the 5”range. Recovered bullet
diameter averages nearly .50 caliber.
This round is identical to the Hornady LE 81265, which is law enforcement only.
Black Hills produces
factory new rifle ammunition equal to some of the best handloads. It is
quickly becoming one of most popular manufacturers of ammunition. Used
primarily by all branches of the United State military, this ammunition
is also used by competitive shooters and hunters.
The 70 grain GMX is a monolithic hollow-point, but unlike similar
monolithic bullets such as the all-copper Barnes TSX, the Hornady GMX is
made from gilding metal (95% copper and 5% zinc). Hence the “GM”
portion of GMX.
"Black Hills is now going to create and market a 5.56 pressure round,
sealed at case neck, and primer, using the Hornady 70gr GMX projectile.
It's probably as close as one can get to the fabled "Browntip" ammo,
although I believe the Browntip uses a TSX instead of a GMX bullet.
Arguably, the GMX is an even better projectile for its superior
performance on windshields and its resistance to fouling barrels quite
as much. As another tidbit, all 5.56 rounds that Black Hills loads with TSX or
GMX projectiles, will now be sealed at the case neck (previously they
were just sealed at the primers)." WeaponEvolution.com - "5.56 Optimized" alternative for Civilians
"Black Hills new 70-grain 5.56 is just the medicine for those searching
for a high-performing monometal round. The load features a Hornady GMX
monolithic copper alloy bullet. The longer projectile offers shooters an
outstanding .350 ballistic coefficient. This combined with its weight
and 95-percent retention of mass after impact, the round has excellent
terminal ballistics and can really reach out and touch a critter. It
also gives law enforcement a solid choice for a barrier penetration.
Note, the load is designed to function with 1:7- and 1:8-inch twist
rates." Gun Digest
While the 5.56x45mm NATO
will fit in a .223 Remington chamber, the 5.56 is a military round that
runs at higher pressures than its .223 counterpart and is not
recommended to be fired in a .223 Remington chamber.
Weight: 70 Grain
Style: Hornady GMX
We are a Black Hills Ammunition authorized stocking dealer.
Velocity: 2800 fps
- Muzzle Energy: 1219 ft lbs