300 Blackout Ammo
Blackout Ammunition .300 Blackout 125gr Sierra MatchKing, 20 Round Box
300 Blackout Ammo
Blackout Ammunition .300 Blackout 147gr FMJ, 160 Round Bucket
300 Blackout Ammo
300 Blackout Ammo
Blackout Ammunition .300 Blackout 196gr Punisher Series, Subsonic Fracturing, 20 Round Box
300 Blackout Ammo
Blackout Ammunition .300 Blackout Subsonic 215gr Berger Hybrid Target, 160 Round Bucket
300 Blackout Ammo
Blackout Ammunition .300 Blackout Subsonic 215gr Berger Hybrid Target, 20 Round box
300 Blackout Ammo
Blackout Ammunition .300 Blackout Subsonic 220gr Sierra MatchKing, 160 Round Bucket
300 Blackout Ammo
Blackout Ammunition 300 Blackout 110gr Varminter Hollow Point, 20rd Box
How to choose 300 Blackout ammo
300 Blackout ammo divides into two jobs, and nearly every buying mistake comes from picking a load built for the other one. Decide which job you are buying for and the rest follows. Building a house gun? Read our 300 Blackout home defense guide.
| If you want | Buy | Typical figures |
|---|---|---|
| Maximum quiet, suppressed | subsonic 190gr to 220gr | 1,000 to 1,060 fps, roughly 500 ft lbs |
| Hunting and defensive use | supersonic 110gr to 150gr | 1,900 to 2,375 fps, 1,200 to 1,400 ft lbs |
| Range volume and practice | 147gr FMJ or 220gr match | cheapest per round, no expansion |
| Deer and hogs inside 250 yards | 110gr to 150gr expanding | copper or bonded hunting bullets |
Grain weight, and what it actually changes
Subsonic 300 Blackout ammo all arrives at roughly the same speed, because the sound barrier caps it near 1,125 fps at sea level. Weight, not velocity, is what separates one subsonic load from another. A 190gr is the lightest common subsonic and the easiest to cycle, 208gr is a popular match weight, and 220gr is the heaviest common factory load and the quietest in character, carrying roughly 500 ft lbs.
Supersonic weights behave normally. A 110gr is the fastest and flattest at about 2,375 fps, 125gr is the all purpose weight most factory loads use, and 150gr is the heaviest common supersonic and the deepest penetrating. Muzzle energy stays in a narrow band of roughly 1,200 to 1,400 ft lbs across the range.
Bullet construction decides hunting performance
This matters more than the grain number. A 220gr full metal jacket subsonic and a 220gr expanding subsonic weigh the same and shoot to nearly the same point of impact, and only one of them is suitable for game. At 1,000 fps there is very little velocity available to drive expansion, so a hunting subsonic must use a bullet specifically designed to open at that speed.
The same applies supersonic. A 147gr FMJ is superb practice ammunition and a poor choice for deer, while a 110gr copper hunting bullet is built to expand reliably at short barrel velocities. Buy the construction, not just the weight.
Shipping and compliance
We ship 300 Blackout ammo within the USA to lawful destinations only, and orders over $300 ship free. It remains the buyer's responsibility to know and follow the law where they live, since ammunition rules vary by state and by city. See our shipping and delivery page for details and our returns policy for the 30 day window on damaged or incorrect orders. Choosing a deer rifle? Read 300 Blackout vs 350 Legend, or see all Blackout ammo.
Frequently asked questions
What is the best 300 Blackout ammo for hunting?
A 110gr to 150gr supersonic expanding load for deer and hogs inside 250 yards. For suppressed subsonic hunting, choose a 190gr to 220gr bullet specifically designed to expand at 1,000 fps and keep shots inside roughly 150 yards.
What is the best 300 Blackout ammo for home defense?
A 110gr to 125gr supersonic expanding load from a short barrel. It delivers rifle energy with controllable blast, and expanding construction matters more than weight at defensive distances.
How much does 300 Blackout ammo cost?
Less than 8.6 Blackout and more than 5.56, because it uses a heavier bullet in lower volumes. Practice FMJ is the cheapest option and buckets bring the per round price down considerably against boxes.
Will subsonic 300 Blackout cycle my rifle?
Often yes, but not always. Many factory subsonic loads are gassed to cycle a carbine unsuppressed, though short barrels, gas port sizing and buffer weight all change the outcome. Fitting a suppressor usually improves cycling.