Starline Brass 300 Blackout Unprimed Rifle Cases - 100 Pack (300BLKEUP100)
$39.23
- Capacity-Rounds:
- 100
- Type:
- Rifle
- Caliber-Gauge:
- 300 AAC Blackout/Whisper
- Quantity:
- 100 Per Bag
- Material:
- Brass
- Metal Type:
- Brass
- Recommended Usage:
- Reloading
Building custom ammunition starts with quality brass, and Starline Brass 300 Blackout unprimed rifle cases give you a solid foundation for reloading. Whether you're assembling subsonic rounds for a suppressed AR or pushing supersonic loads for distance, these unprimed cases offer the dimensional consistency that precision handloaders expect. The 100-pack format hits the sweet spot for folks who shoot 300 Blackout regularly—enough volume to justify the brass investment without overcommitting to inventory.
Starline is known for producing cases that work reliably across a wide range of equipment and loads. Because these arrive unprimed, you control the primer selection, which means you can match your priming strategy to your specific cartridge design and intended use. That flexibility is one reason reloaders favor Starline brass for intermediate and specialty calibers.
300 Blackout reloaders appreciate dependable cases that perform shot after shot. With consistent wall thickness and reliable dimensions, Starline brass minimizes variables so you can dial in your loads with confidence. Whether you're developing ammunition for hunting, suppressed shooting, or range work, starting with quality unprimed cases removes one source of inconsistency from your process.
Key Features
- Unprimed cases—you select primers to match your load design
- 100 cases per pack, sized for regular reloaders
- Starline's standard dimensional consistency
- Suitable for both subsonic and supersonic 300 Blackout loads
Specifications
| Caliber | 300 Blackout |
| Case Type | Unprimed rifle brass |
| Quantity | 100 cases |
| Manufacturer | Starline Brass |
| Part Number | 300BLKEUP100 |
Frequently Asked Questions
What's the difference between primed and unprimed cases?
Unprimed cases arrive without a primer installed, allowing you to choose the primer type and manufacturer that best suit your load recipe. This gives you control over a critical component and is preferred by many experienced reloaders.
Can I use these for both subsonic and supersonic 300 Blackout loads?
Yes. Starline 300 Blackout unprimed cases work with both subsonic and supersonic ammunition, so you can load to your intended velocity without buying different brass.
How many times can I reload these cases?
We haven't provided specific rebatching data, so check Starline's published reloading guides or contact them directly for their recommended case life based on your load intensity and handling.
What's included in the 100-pack?
You receive 100 unprimed 300 Blackout rifle cases. No primers, ammunition, or additional components are included.
