As a long-time shooter and backcountry enthusiast, I’ve always been fascinated by ballistics and the pursuit of accuracy. One tool that consistently delivers reliable velocity data is the MagnetoSpeed chronograph. However, the standard mounting options can be… limiting, especially when you’re trying to integrate it into a field setup. That’s why I’ve spent years refining a DIY MagnetoSpeed mount solution, and in this article, I’ll share everything I’ve learned. We’ll cover why you might want to build your own, the benefits of a custom mount, a detailed build guide, and a comprehensive MagnetoSpeed chronograph review, focusing on its practical applications for hunters, precision rifle shooters, and even those just starting to explore the science of shooting.
Why Build a DIY MagnetoSpeed Mount?
The MagnetoSpeed is a fantastic piece of kit, offering a non-intrusive way to measure projectile velocity. But the included mounts, while functional, aren’t always ideal. They can be bulky, difficult to attach to certain barrel types, or simply not suited for specific shooting scenarios. A DIY MagnetoSpeed mount allows you to tailor the setup to your exact needs. Here’s what I’ve found to be the biggest advantages:
- Versatility: Create a mount that works with your specific firearm – rifle, shotgun, or even airgun.
- Stability: A well-designed mount minimizes movement and ensures accurate readings.
- Portability: Reduce bulk and weight compared to some commercial options.
- Cost-Effectiveness: Building your own can be significantly cheaper than purchasing specialized mounts.
- Customization: Integrate features like Picatinny rails, QD mounts, or even adjustable angles.
Before diving into the build, let’s quickly review the MagnetoSpeed itself. I’ve used several chronograph models over the years, and the MagnetoSpeed consistently stands out for its ease of use and accuracy. You can find detailed information on their product line at MagnetoSpeed’s official website.
MagnetoSpeed Chronograph Review: Performance and Features
I’ve been using the MagnetoSpeed V3 for over five years now, and it’s become an indispensable part of my load development process. Here’s a breakdown of my experience:
Accuracy and Reliability
The MagnetoSpeed utilizes a dual sensor system to measure velocity without physically contacting the projectile. This is a huge advantage, as it eliminates the potential for interference and ensures consistent readings. I’ve consistently found the readings to be within 1-2 fps of other chronograph systems, and it’s proven incredibly reliable in various weather conditions. The National Park Service utilizes similar ballistic principles in their research, highlighting the importance of accurate velocity measurement.
Ease of Use
Setting up the MagnetoSpeed is incredibly straightforward. The sensors easily attach to the barrel, and the unit itself is intuitive to operate. The display is clear and easy to read, even in bright sunlight. The included software allows you to download and analyze your data, which is a huge benefit for serious shooters.
Portability and Durability
The MagnetoSpeed is relatively compact and lightweight, making it easy to transport. The unit feels well-built and has withstood plenty of abuse during my backcountry adventures. However, it’s still an electronic device, so proper care and storage are essential. Always refer to the manufacturer’s instructions for optimal performance and longevity.
Limitations
While the MagnetoSpeed is excellent, it’s not perfect. It can be sensitive to certain barrel harmonics, and it may not work reliably with some heavily suppressed firearms. Also, the price point is higher than some other chronograph options. However, in my opinion, the accuracy and reliability justify the investment.
DIY MagnetoSpeed Mount: Materials and Tools
Now, let’s get to the heart of the matter – building your own mount. I’ve experimented with various materials and designs, but this is my go-to method. It’s relatively simple, affordable, and produces a robust and versatile mount.
- Aluminum Bar Stock: Approximately 1” x 1” x 6” (6061-T6 is a good choice)
- MagnetoSpeed Sensor Clamps: The original clamps that came with your MagnetoSpeed.
- Picatinny Rail Section (Optional): For mounting to a rail system.
- Hardware: Two #8-32 set screws with nylon tips.
- Tools:
- Metal Saw (Hacksaw or Bandsaw)
- Drill and Drill Bits
- Tap and Die Set (#8-32)
- Files
- Sandpaper
- Vise
- Calipers (Highly Recommended)
Safety first! Always wear appropriate eye protection and gloves when working with metal. Refer to OSHA’s safety guidelines for metalworking.
Step-by-Step Build Guide: Creating Your Custom Mount
- Cut the Aluminum: Cut the aluminum bar stock to approximately 4” in length.
- Drill the Mounting Holes: Using the MagnetoSpeed sensor clamps as a template, carefully mark and drill the mounting holes in the aluminum bar. Ensure the holes are accurately positioned to accommodate the clamps.
- Tap the Holes: Use the #8-32 tap to thread the holes. Go slowly and use cutting oil to prevent damage to the threads.
- Drill and Tap Set Screw Holes: Drill two small holes perpendicular to the sensor clamp mounting holes. These will house the set screws. Tap these holes with the #8-32 die.
- Install Set Screws: Insert the set screws into the tapped holes. These will secure the sensor clamps to the aluminum bar.
- Deburr and Finish: Use files and sandpaper to remove any sharp edges or burrs. You can also apply a protective finish, such as anodizing or paint.
- Attach Picatinny Rail (Optional): If desired, attach a Picatinny rail section to the aluminum bar using appropriate hardware.
This design allows you to easily adjust the position of the sensor clamps to accommodate different barrel diameters. The set screws provide a secure and reliable hold. I’ve found this mount to be incredibly stable and accurate.
Alternative Mount Designs
While the above method is my preferred approach, there are other options. Some builders use 3D printing to create custom mounts, while others utilize existing accessories like flashlight mounts or bipod adapters. The key is to prioritize stability and secure attachment.
Optimizing Your MagnetoSpeed Setup for Accuracy
Even with a great mount, achieving accurate readings requires attention to detail. Here are a few tips:
- Level Surface: Ensure the chronograph is placed on a level surface.
- Consistent Lighting: Avoid direct sunlight or shadows on the sensors.
- Proper Alignment: Align the sensors perpendicular to the projectile’s path.
- Multiple Shots: Take multiple shots and average the readings to minimize errors.
- Follow Manufacturer’s Instructions: Always refer to the MagnetoSpeed’s manual for specific recommendations.
The Leave No Trace principles also apply when setting up and using your chronograph in the field. Be mindful of your surroundings and avoid disturbing the environment.
Beyond Velocity: Using Your MagnetoSpeed for Load Development
The MagnetoSpeed isn’t just for measuring velocity; it’s a powerful tool for load development. By tracking velocity variations, you can identify optimal powder charges, assess barrel harmonics, and even detect pressure signs. This information is invaluable for achieving maximum accuracy and consistency. I often combine data from the MagnetoSpeed with group size measurements to fine-tune my loads. For more information on load development, check out resources from reputable reloading manuals and online forums.
Final Thoughts on the DIY MagnetoSpeed Mount and Chronograph
Investing in a MagnetoSpeed chronograph is a smart move for any serious shooter. And taking the time to build a DIY MagnetoSpeed mount tailored to your needs can significantly enhance its versatility and performance. I hope this guide has provided you with the knowledge and confidence to create your own custom mount and unlock the full potential of this valuable tool. Remember to prioritize safety, accuracy, and responsible shooting practices. Happy shooting!
Disclaimer: I am not a professional gunsmith. This guide is based on my personal experience and should be used at your own risk. Always consult with a qualified professional before modifying any firearm or related equipment.