The Versatility of the 300 Blackout
The 300 Blackout cartridge has rapidly become a favorite for those seeking a versatile and adaptable round. From hunting applications to home defense, and especially when paired with a suppressor, the 300 Blackout shines. At the heart of its popularity lies the ability to deliver both supersonic and subsonic performance, making it a top choice for shooting enthusiasts everywhere. This article delves into the world of subsonic shooting with the 300 Blackout, focusing on Berrys 220 grain bullets and providing crucial insights into achieving optimal results. We will explore load data, best practices, and safety considerations to help you unlock the full potential of this exciting cartridge.
The History and Design
The 300 Blackout, originally designed by Advanced Armament Corporation, is a cartridge that has experienced a surge in popularity. Its design centers around using standard AR-15 platforms, making it a straightforward conversion for those already familiar with the AR-15 system. One of the key advantages of the 300 Blackout is its flexibility, allowing for the efficient shooting of both supersonic and subsonic loads.
Supersonic vs. Subsonic
Supersonic loads offer excellent ballistics and effective range for various applications. However, it’s the subsonic realm where the 300 Blackout truly excels. Subsonic loads travel below the speed of sound (approximately 1100 feet per second at sea level), eliminating the sonic crack associated with supersonic bullets. This feature is particularly appealing when shooting with a suppressor, allowing for extremely quiet and controlled shooting experiences.
Subsonic Shooting: The Silent Advantage
Subsonic loads offer a unique set of advantages. The most significant benefit is the dramatic reduction in noise when used with a suppressor. Without the sonic crack, the sound signature is significantly reduced, making it perfect for situations where noise control is essential, like hunting or tactical scenarios.
Reduced Recoil
Furthermore, subsonic rounds are often associated with reduced recoil, which is a crucial consideration for shooters of all skill levels. This lower recoil contributes to improved shot-to-shot consistency and quicker follow-up shots. While subsonic rounds are not always considered the best option for long ranges, their accuracy can be excellent, especially when properly loaded and utilized with a quality optic and a well-maintained firearm.
Bullet Weight Importance
The choice of bullet weight is crucial for achieving reliable subsonic performance. Generally, heavier bullets, like those in the 220-grain range, are favored. The heavier weight allows the bullet to maintain its momentum at subsonic velocities, improving accuracy and terminal performance.
Berrys Bullets: A Trusted Name in Reloading
Berrys Bullets is a respected manufacturer known for producing high-quality bullets at a reasonable price point. Their plated bullets have become a favorite among reloaders, offering a balance of accuracy, affordability, and ease of use. For the 300 Blackout, and especially for those crafting subsonic loads, the 220-grain bullet from Berrys presents an excellent option.
Affordability and Availability
These bullets are often a great choice for those new to reloading, offering consistent performance and contributing to cost savings compared to some other brands. They also offer the benefit of being plated rather than jacketed, which can contribute to decreased barrel wear and increased lifespan of your firearm.
Optimizing Subsonic Loads: Powder Selection is Key
Selecting the correct powder is paramount when reloading for the 300 Blackout, especially for subsonic applications. The goal is to achieve the desired velocity while maintaining safe pressures. The proper powder provides the right burn rate to push the bullet through the barrel at a subsonic speed. Here are some of the powders often used for subsonic loads.
Powder Types and Their Characteristics
* **Hodgdon H110:** Hodgdon H110 is often considered the standard, working well with both supersonic and subsonic loads. H110 provides a good balance of velocity and consistency when paired with the 220-grain bullet.
* **Accurate 1680:** This powder is renowned for its performance in the 300 Blackout, specifically for subsonic loads. It offers excellent accuracy and typically fills the case effectively, contributing to consistent ignition and velocity.
* **Alliant Reloder 7:** Reloder 7 is another popular choice, known for its accuracy and consistent burn rate. It offers excellent performance with heavier bullet weights, like those of the 220-grain variety.
Remember to always start with the minimum recommended powder charge and cautiously work your way up, monitoring for signs of excessive pressure. Never exceed the maximum powder charge.
Load Data Guidelines: Starting Point for Success
**Important Safety Warning:** Reloading can be a dangerous activity. The following load data is presented for informational purposes only and is not a substitute for consulting reputable reloading manuals. Always start with the minimum recommended charge and carefully work your way up, watching for any signs of pressure. Never exceed the maximum recommended charge. Reloading is done at your own risk. Always wear eye protection and ear protection when reloading and shooting.
The following information provides a starting point for creating subsonic loads using Berrys 220 grain bullets. Remember that these figures are based on specific equipment and conditions. Individual results may vary, and should be treated as a starting reference for your own load development.
Load Data Table
| Powder Type | Primer Type | Starting Charge (Grains) | Maximum Charge (Grains) | Estimated Velocity (FPS) | Cartridge Overall Length (COAL) | Notes |
|---|---|---|---|---|---|---|
| Hodgdon H110 | Small Rifle | 9.5 | 10.5 | 1000 – 1050 | 2.180″ | Generally a good all-around performer. Check for unburnt powder. |
| Accurate 1680 | Small Rifle | 10.0 | 11.0 | 1020 – 1080 | 2.200″ | Excellent accuracy potential. Often yields consistent velocities. |
| Alliant Reloder 7 | Small Rifle | 11.0 | 12.0 | 1010 – 1070 | 2.190″ | Provides great accuracy. May require a slightly higher charge to achieve subsonic speeds. |
- Always consult at least one reputable reloading manual (like the Speer Reloading Manual, Hodgdon Reloading Data, or the Sierra Reloading Manual). The data above is for reference only.
- Always begin with the lower charges.
- Never mix powders.
- When adjusting loads, only change one component at a time (powder charge, seating depth, etc.).
- When working up a load, inspect the fired cases for any signs of excessive pressure (e.g., flattened primers, ejector marks).
- If you observe any unusual behavior or signs of excess pressure, cease using that load immediately.
Essential Preparations and Reloading Procedures
Before starting to reload, it is vital to prepare your brass. This typically involves several steps:
Brass Cleaning and Sizing
* **Cleaning:** Clean your brass thoroughly to remove any debris.
* **Sizing:** Resize the brass using a 300 Blackout resizing die.
Trimming, Deburring, and Priming
* **Trimming:** Trim the cases to the correct length. This ensures proper neck tension and consistent bullet seating. The length should be verified.
* **Deburring/Chamfering:** Deburr and chamfer the case mouths. This makes bullet seating easier and more consistent.
* **Priming:** Prime the cases with the correct small rifle primer.
Powder Charge and Seating
* **Powder Charge:** Measure your powder charge precisely using a scale and a powder dispenser.
* **Seating:** Carefully seat the Berrys 220-grain bullet to the correct Cartridge Overall Length (COAL).
Fine-Tuning for Superior Accuracy
Once your loads are prepared, attention to several details is critical to get the most out of your loads:
Seating Depth and Crimping
* **Seating Depth:** Seating depth significantly impacts accuracy and pressure. Experiment with seating depth, making small adjustments to find the optimal setting for your specific rifle and barrel.
* **Crimping:** Crimping can help with consistent bullet retention, particularly for heavier bullets and loads that experience more recoil. A light crimp can improve shot-to-shot consistency. However, this is not always necessary for a properly loaded 300 Blackout subsonic load.
Brass Preparation and Environmental Effects
* **Brass Preparation:** Thorough brass preparation is crucial for consistent results. Pay close attention to cleaning, trimming, and deburring the brass.
* **Environmental Effects:** Temperature and elevation can influence velocity. Velocity will typically increase with warmer temperatures and decrease with colder temperatures.
Troubleshooting
* **Troubleshooting:** If you experience problems, begin by checking for keyholing, failure to feed, or other issues. Examine your loads carefully, and make sure to refer to reloading guides.
The Value of Testing and Data Logging
Accuracy is critical when using Berrys 220 grain bullets for subsonic loads. Creating a detailed log of your loading data is an integral part of the reloading process. This document will serve as a helpful reference, enabling you to replicate successful loads and troubleshoot any future issues that may arise. Be sure to include things like the brass, powder, primer, and COAL.
Chronographing, Target Analysis, and Evaluation
* **Chronographing:** A chronograph is one of the most valuable tools for developing accurate loads. It lets you measure the velocity of your bullets, providing valuable data to gauge performance.
* **Target Analysis:** When at the range, carefully examine your groups. Make notes of your results, and make adjustments accordingly.
* **Evaluation:** Record the results of each load, paying particular attention to grouping size.
Safety: The Cornerstone of Reloading
Safety should always be the top priority in reloading. Always adhere to safe practices to protect yourself and those around you. Ensure you always use safety glasses and hearing protection when shooting.
Following Safety Guidelines
* **Always Follow Published Data:** Only utilize load data from established and reliable sources such as loading manuals from reputable manufacturers.
* **Equipment:** Ensure all reloading equipment is calibrated and in good working order.
* **Check for Excess Pressure:** Be vigilant for signs of pressure, such as flattened primers, ejector marks, and difficult bolt extraction. If observed, immediately stop using that load.
* **Suppressed Firearms:** When using a suppressor, be aware of the potential for increased back pressure. Ensure that your rifle and suppressor are compatible, and always follow the manufacturer’s guidelines.
Conclusion: Unleashing the Potential
Reloading for the 300 Blackout with Berrys 220 grain bullets can offer a unique and rewarding experience. The opportunity to create consistent subsonic loads gives shooters an edge for noise reduction and enhanced accuracy. When paired with a suppressor, this combination provides a nearly silent, accurate, and effective platform.
By understanding the principles of subsonic ballistics, choosing the correct components, and following safe reloading practices, you can unlock the full potential of your 300 Blackout rifle. Remember to take notes and record data to consistently refine your loads for optimal performance. The 300 Blackout is a versatile round, and the pursuit of precision with subsonic loads is a fulfilling project for any shooting enthusiast.
Disclaimer
The load data provided is for informational purposes only and is not a guarantee of safety or performance. All reloading activities are undertaken at the user’s own risk. The author is not responsible for any injury, damage, or liability resulting from the use of this information. Always consult with a reputable reloading manual and a qualified gunsmith or reloading expert before reloading ammunition. Handle all firearms and ammunition with extreme care.
