Fiocchi 300Bksbs Hypermance 300Blackout 220Gr Nosler Bt 20 Per Box/10 Case

Fiocchi 300 Blackout ammunition engineered specifically for short-barrel rifle platforms. The Hypermance line pairs 220-grain Nosler Boat Tail projectiles with propellant selection and charge weights optimized for barrels from 7.5" to 11.5"—the sweet spot where subsonic and transonic 300 Blackout rounds perform best. If you're running a short-barreled rifle, patrol carbine, or pistol with an arm brace, this ammunition is built to extract reliable terminal performance from a shorter sight radius and reduced powder column.

The 220-grain Boat Tail design delivers consistent, controlled energy transfer on game and steel. Fiocchi formulated these loads for complete powder burn, which means less muzzle flash, lower sound signature, and better velocity stability across the short-barrel spectrum. Suppressors remain a common pairing with subsonic 300 Blackout builds—this ammunition is safe for that application and won't degrade suppressor service life.

Delivered in boxes of 20 rounds, with a full case containing 10 boxes. Fiocchi's quality control and consistency make reloading data and ballistic prediction more reliable, which matters when you're dialing distance on a SBR or building a precision-accuracy setup. Whether you hunt, train, or compete with short-barrel platforms, Hypermance 300 Blackout removes the guesswork from ammunition selection.

Key Features

• 220-grain Nosler Boat Tail projectile for reliable, controlled terminal performance
• Optimized powder selection and charge weights for 7.5" to 11.5" barrel lengths
• Complete powder burn reduces muzzle flash and report
• Safe for suppressed 300 Blackout builds
• 20 rounds per box; 10 boxes per case

Specifications

Frequently Asked Questions

Is this ammunition suitable for short-barrel rifles and SBRs?

Yes. Fiocchi specifically formulated Hypermance 300 Blackout for barrels ranging from 7.5" to 11.5", so it will perform reliably in short-barreled rifle platforms where standard full-length loads often underperform.

Can I use this ammunition with a suppressor?

Yes. Hypermance 300 Blackout is safe for suppressed use and won't damage your suppressor.

What is the projectile weight and type?

The ammunition uses a 220-grain Nosler Boat Tail projectile, designed for controlled expansion and consistent terminal performance at subsonic and transonic velocities.

How much ammunition is in a case?

Each case contains 10 boxes of 20 rounds each, for a total of 200 rounds per case.