Black Hills MK262 ammo has built its reputation one tight group at a time, and this 20 round box is the simplest way to find out why. The load is the MK262 MOD 1-C profile in 5.56x45mm, topped with a 77 grain open tip match bullet. It is what shooters reach for when a generic training cartridge will not do the job. Every part of the recipe is aimed at repeatability.
What Black Hills MK262 Ammo Is and Who It Is For
This is a match grade 5.56x45mm load offered in a small, easy to buy quantity. Twenty rounds is the right unit for confirming a zero, running a precision stage, or checking a new optic without burning through a case of ammunition. It is a purpose built cartridge rather than a plinking round, and it behaves like one.
Owners of AR-15 pattern rifles are the natural audience here. 5.56 is the standard AR-15 chambering, so rifles and components are everywhere and practice stays affordable, which makes it easy to justify a premium load for the shots that actually count. Bolt guns and precision uppers chambered in 5.56 will get just as much out of it.
Features That Show Up on the Target
- 77 grain open tip match bullet, at the heavier end of the common 5.56 weight range
- MK262 MOD 1-C load profile, a designation with a long and well known service history
- Brass cases you can collect and reload if handloading is part of your routine
- Consistent velocity from lot to lot, which keeps your point of impact honest
- Smooth feeding through standard AR-15 magazines and feed ramps
- Twenty rounds per box, a sensible amount for zero confirmation and precision work
The Numbers Behind Black Hills MK262 Ammo
The chambering is 5.56x45mm, so the cartridge runs in any rifle marked for 5.56 NATO. The bullet weighs 77 grains and uses open tip match construction, a design that leaves a small opening at the nose because of how the jacket is formed and produces an unusually uniform base. That uniformity is where the accuracy comes from.
The cases are brass, which matters twice over. Brass extracts cleanly and it holds up to resizing, so anyone who reloads gets a second life out of every box. Twenty rounds per box also keeps the buy small enough to test a load before you commit to a case of it.
Black Hills has been loading this profile long enough that shooters treat it as a known reference point, and that is exactly how we stock it on our shelves.
Range Use, Storage and Rifle Compatibility
Heavier 77 grain bullets need enough rifling twist to stabilize properly. Barrels with a 1:7 or 1:8 twist are the usual home for this load, which covers most modern AR-15 uppers and nearly every rifle built with heavy bullets in mind. If your barrel is a slower 1:9 twist, shoot a few rounds and check your groups on paper before you commit to it.
Store the box somewhere cool, dry and out of direct sun. Ammunition kept at a stable temperature in a sealed container will still shoot the way it did the day you bought it years later, and a cheap desiccant pack in a storage can is easy insurance. Keep the box label with the rounds so you can track lots against your data book.
If you are building out a broader stock of rifle and handgun rounds, browse the rest of our ammunition selection and pair this match load with a bulk training round so you can practice cheaply and verify precisely.
Why Shooters Keep Coming Back
Match ammunition earns its keep by removing a variable. When your groups open up, you want to be certain the problem is the wind, the rest or you, and not the cartridge you loaded. Black Hills MK262 ammo is the load that lets you make that assumption safely.
Buy a box, shoot a zero, record your data, and you have a reference your rifle will hold for as long as you feed it the same thing. That is the entire argument for a load like this one. This ammunition ships straight to your door wherever state and local law allows.
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