.300 BLK AMMO RECOMMENDATIONS

300 BLK is popular because it works exceptionally well in short barrels and when suppressed, and comes in two variants: Subsonic heavy bullets (for suppressed, low‑report use) and Supersonic lighter bullets (for unsuppressed, with higher velocity and terminal performance).

Pick the ammo type that matches your setup and how you’ll use the firearm.

Rifle‑length ARs (16″+ Barrels)

• Training / Range: 110–125 gr FMJ — common, reliable for high‑volume practice (look for major brands like Remington/PMC/Black Hills).

• Hunting / Field: 110–150 gr supersonic expanding (soft‑point/bonded) — bonded options from Hornady, Barnes, Black Hills.

• Precision / Short‑range: heavier supersonic match rounds when available — try match offerings from Hornady and Nosler for best groups.

• Self‑Defense: supersonic bonded JHPs (bonded or barrier‑rated from Black Hills, Hornady Critical Duty variants where available).

• Suppressed / Low‑Report (Subsonic): 185–240 gr subsonic loads — Barnes, Hornady Subsonic, Black Hills subsonic offerings are top picks.

Pistol/Short‑barrel ARs (Barrels Shorter Than 16”) & Suppressed Builds

• Training / Function Checks: 110–125 gr supersonic FMJ for feeding and cycling tests (Hornady Black, PMC).

• Suppressed / Low‑Report (Subsonic): 185–240 gr subsonic loads — Barnes, Hornady Subsonic, Black Hills subsonic offerings are top picks.

• Self‑Defense (Suppressed): heavy subsonic bonded/solid bullets (monolithic TSX, bonded subsonic JHPs) for reliable penetration.

• Field / Hunting (Suppressed): 185–220 gr subsonic expanding or solid monolithic options — test performance on the game you pursue.

Tips for Best Results

• Gas & cycling: Subsonic loads may require gas tuning or an adjustable gas block for optimal performance, and are not recommended if not shooting suppressed.

• Chronograph & function‑test every load in your exact firearm (suppressed and unsuppressed if applicable).

• Match bullet construction to task: monolithic/bonded for barriers and hunting; JHP/bonded for unsuppressed defensive use.