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Posted On: 8/22/2022
By: Ayed Jabra
A: Thanks for reaching out Ayed! This ammunition would be roughly about as effective for home defense as the U.S. Armed Forces' own 5.56x45 M193 cartridge. That's to say it is in fact capable of neutralizing an immediate threat to your safety. That said, there are far better choices for self-defense than this ammo, which is actually designed for long-range target shooting (specifically sniping, although you're obviously not going to snipe a threat from your truck). You would ideally use ammo with polymer tipped or soft point bullets that are designed for terminal expansion. A bullet that expands during penetration inflicts greater damage to surrounding soft tissues and reduces (but doesn't eliminate) the chance of potentially disastrous over-penetration. If your rifle is chambered for 5.56, then it's also able to safely fire 223 Rem. That's why the best ammo I can recommend to you is Federal Premium's law enforcement grade 223, which is loaded with an expanding soft point bullet: luckygunner.com/223-rem-55-grain-sp-federal-le-tactical-20-rounds
Posted On: 2/22/2022
By: Mike
A: Thanks for reaching out Mike! That information is proprierary to Black Hills, unfortunately. I've asked them what kind of powder they load before, but they're not at liberty to disclose that information to the public.
Posted On: 10/15/2020
By: Tom
A: Hi Tom! We certainly intend to offer this ammo again as soon as we are able. I can't fairly promise you exactly when that will be, but we are still frequently updating our inventory even throughout the ammo drought. I hope you'll check back in again soon to see how we can be of better use to you!
Posted On: 12/14/2018
By: Russ
A: According to the Shooters Calculator.com the ballistic coefficient of the 5.56x45 77gr OTM is 0.362. Now this will be according to your conditions. I hope this helps. Thanks
Posted On: 7/4/2018
By: Roy Kiefer
A: Hi Roy,
A 1:8 twist barrel will do best with a grain weight between 62 and 77 grain. It can use weights as low as 40 grain or as high as 87 grain with a slight reduction in accuracy. It is not recommended to go lower or higher than this range as performance will suffer.
Posted On: 4/24/2018
By: Jeremy
A: Hi Jeremy,
The civilian version, such as this one, will typically have more polishing and finishing done to the rounds. The military version was made for military use and the military puts more emphasis on function over aesthetics.
