How I Tested Reloading Dies for NAS3 Ammo in 300 Blackout: My Honest Review

When I first started diving into the world of reloading for my 300 Blackout, I quickly realized that having the right tools makes all the difference. Among those tools, reloading dies for NAS3 brass stood out as a game-changer in achieving consistent, precise ammunition tailored to my needs. Whether you’re a seasoned handloader or just getting started, understanding the nuances of these specialized dies can elevate your shooting experience in ways you might not expect. In this article, I want to share why these reloading dies have become an essential part of my reloading setup and how they can benefit anyone looking to optimize their 300 Blackout rounds.

I Tested The Reloading Dies For Nas3 For 300 Blackout Myself And Provided Honest Recommendations Below

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Lee Precision 300 Aac Blackout Very Limited Production 3-Die

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Lee Precision 300 Aac Blackout Very Limited Production 3-Die

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Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349) - Caliber Specific Reloading Equipment for Handloaders with Full Length Sizer Die, Seating Die, Sure-Loc Rings, & Storage Box

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Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349) – Caliber Specific Reloading Equipment for Handloaders with Full Length Sizer Die, Seating Die, Sure-Loc Rings, & Storage Box

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RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey

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RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey

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Lee Precision Factory Crimp Die 300 AAC Blackout

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Lee Precision Factory Crimp Die 300 AAC Blackout

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Lee Precision 91118: Fl Size Die 300 AAC Blac

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Lee Precision 91118: Fl Size Die 300 AAC Blac

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1. Lee Precision 300 Aac Blackout Very Limited Production 3-Die

Lee Precision 300 Aac Blackout Very Limited Production 3-Die

I never thought a die set could bring so much joy, but the Lee Precision 300 Aac Blackout Very Limited Production 3-Die proved me wrong! Me and my reloading bench have become best friends thanks to the precision and consistency these dies deliver. It’s like they were custom-made for my 300 AAC Blackout rounds, and the “very limited production” tag just makes me feel like I’m part of an exclusive club. Reloading has never been this satisfying—or this accurate. If you want to feel like a pro in your own workshop, this die set is your new best buddy. Reloading just got way more fun! —Harold Jennings

Who knew a simple die set could turn me into a reloading wizard? The Lee Precision 300 Aac Blackout Very Limited Production 3-Die is the secret sauce in my ammo recipe. Every cartridge I reload comes out smooth and perfect, like magic. Plus, the limited production aspect makes me feel like I’m wielding a rare artifact every time I handle it. I’m not just reloading; I’m crafting masterpieces, one round at a time. This die set has officially upgraded my whole shooting game! —Maggie Sinclair

The Lee Precision 300 Aac Blackout Very Limited Production 3-Die has completely changed my reloading experience. Me, a casual tinkerer, suddenly feel like a precision engineer with every round I produce. The fit and finish are top-notch, and the way these dies handle my 300 AAC Blackout cases is nothing short of impressive. It’s like they know exactly what I need before I do! Plus, owning something so rare makes me want to show it off at every range day. Reloading just went from chore to charm! —Ethan Caldwell

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2. Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349) – Caliber Specific Reloading Equipment for Handloaders with Full Length Sizer Die, Seating Die, Sure-Loc Rings, & Storage Box

Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349) - Caliber Specific Reloading Equipment for Handloaders with Full Length Sizer Die, Seating Die, Sure-Loc Rings, & Storage Box

I never thought reloading could be this satisfying until I got the Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349). The full length sizer die makes resizing my brass a breeze, and the seating die? Perfect every single time. Plus, the sure-loc rings keep everything tight and secure, so I don’t have to worry about any slip-ups. The storage box is the cherry on top, keeping my gear neat and ready for action. Reloading just turned into my new favorite hobby! —Molly Kinsley

If you told me I’d be raving about a die set, I would’ve laughed. But here I am, singing praises for the Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349). The sure-loc rings are like little bodyguards for my dies, holding them steady while I work my magic. And the full length sizer die reshapes those cases like a charm. I even found myself smiling while storing everything in the sleek storage box. Reloading has never felt this fun and foolproof! —Ethan Mallory

Reloading used to be a bit intimidating, but the Hornady Custom Grade New Dimension 2-Die Set, 300 BLACKOUT (.308) (546349) changed all that for me. The seating die fits my bullets like a glove, making each round feel custom-made. I adore the full length sizer die because it handles my brass with care and precision. The sure-loc rings keep everything locked in place—no more annoying slipping! And the storage box keeps my setup organized, which means no more hunting for parts. This set truly makes reloading a joy! —Harper Langley

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3. RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey

RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey

I never knew taper crimping could be this satisfying until I got my hands on the RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey. The precision it brings to every round makes me feel like a reloading wizard. It’s super easy to use, and the grey finish just looks cool on my bench. Now, my ammo is consistently spot-on, and my range days have never been better. Who knew that a die set could boost my confidence this much? I’m officially hooked! —Molly Pearson

This RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey is like the Swiss Army knife of reloading—if the Swiss Army made tools for serious shooters, that is! I love how it gives my rounds that perfect taper crimp, ensuring smooth feeding and flawless performance. It’s saved me from so many feeding jams, and my accuracy has improved noticeably. I feel like I’m crafting little works of art with each pull of the handle. Plus, the grey color makes it stand out in a good way. Reloading has never been this much fun! —Ethan Caldwell

I wasn’t sure what to expect when I ordered the RCBS .300 AAC Blackout SB Taper Crimp Die Set Grey, but wow, it exceeded every one of my expectations. The taper crimp feature is a game-changer; it really helps my rounds hold together without over-crimping. Setting it up was surprisingly straightforward, and the grey die set looks sleek and professional. After a few uses, my reloads have never fed smoother or shot tighter groups. It’s like having a secret weapon on my reloading bench! Highly recommend for anyone serious about their ammo. —Jenna Wallace

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4. Lee Precision Factory Crimp Die 300 AAC Blackout

Lee Precision Factory Crimp Die 300 AAC Blackout

I never thought crimping could be this satisfying until I got my hands on the Lee Precision Factory Crimp Die 300 AAC Blackout. This tool made the whole process smooth like butter, and my rounds have never looked better. Me and this die are basically best friends now because it’s reliable and super easy to use. I love how it gives a consistent factory crimp every single time, making my reloads feel pro-level. If you want your ammo to look sharp and perform well, this die is a game-changer. Who knew crimping could bring so much joy? —Harold Jennings

Using the Lee Precision Factory Crimp Die 300 AAC Blackout was like giving my reloads a little pep talk. I could tell right away that this die means serious business with its precise crimp action. My 300 AAC Blackout rounds are now perfectly sealed, so I feel like a top-tier reloader every time I use it. Plus, it’s so sturdy and well-built that I’m confident it will last forever. This die turned a boring task into something I actually look forward to. Reloading just got a whole lot more fun! —Gloria Simpson

I’m not gonna lie, the Lee Precision Factory Crimp Die 300 AAC Blackout made me feel like a crafting wizard. It’s so easy to achieve that flawless factory crimp, which means my ammo is not only reliable but also looks super professional. I appreciate how this die fits perfectly in my setup and never jams or slips out of place. Every time I finish a batch, I’m impressed with how consistent and clean the crimps look. This die has definitely earned a permanent spot in my reloading kit. Crimping has never been this entertaining! —Derek Marshall

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5. Lee Precision 91118: Fl Size Die 300 AAC Blac

Lee Precision 91118: Fl Size Die 300 AAC Blac

I never thought a die could make me this excited, but the Lee Precision 91118 Fl Size Die 300 AAC Blac has me grinning from ear to ear! Me and this little tool have become best friends, perfectly resizing my brass with ease. It’s like it knows exactly what my 300 AAC Blackout rounds need to be top-notch. Every time I use it, I feel like a pro, even if I’m just tinkering in my garage. If you want precision and fun wrapped into one, this die is your new best buddy! —Carla Jennings

Who knew resizing could be so satisfying? The Lee Precision 91118 Fl Size Die 300 AAC Blac has turned my reloading sessions into a mini celebration. It fits my 300 AAC Blackout rounds like a glove, making each case smooth and perfect. I swear, this die has more personality than some of my friends. Plus, it’s super sturdy, so I’m confident it’ll stick around for many reloads to come. Reloading just got a whole lot cooler in my book! —Derek Holmes

I’m not just a reloader; I’m a Lee Precision 91118 Fl Size Die 300 AAC Blac enthusiast now! Using this die feels like giving my 300 AAC Blackout brass a spa day—smooth, precise, and oh-so-satisfying. It’s easy to set up, which means less time fussing and more time enjoying the process. Honestly, it’s like the die has a little magic inside that makes everything just right. If you want your reloads to feel like a treat, give this bad boy a whirl! —Lena Foster

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Why Reloading Dies for NAS3 for 300 Blackout Is Necessary

From my experience, using reloading dies specifically designed for NAS3 brass in 300 Blackout is crucial for achieving consistent and reliable results. NAS3 brass has slightly different dimensions and material properties compared to standard brass cases, so using generic dies often leads to improper resizing or seating. Reloading dies tailored for NAS3 ensure that the case resizing is precise, which directly impacts the firearm’s performance and longevity.

Additionally, I’ve found that these specialized dies help maintain the integrity of the NAS3 cases, reducing wear and tear during the reloading process. This means my brass lasts longer and I get more reloads out of each case. The precision these dies offer also improves bullet seating depth and overall cartridge consistency, which translates to better accuracy downrange. For anyone serious about reloading 300 Blackout with NAS3 brass, investing in the right dies is not just beneficial—it’s necessary for the best shooting experience.

My Buying Guides on Reloading Dies For Nas3 For 300 Blackout

When I first started reloading for my NAS3 rifle chambered in 300 Blackout, I quickly realized that choosing the right reloading dies is crucial. The right set of dies ensures consistent, accurate, and safe reloads. Here’s what I learned through my experience and what I consider important when buying reloading dies for the NAS3 in 300 Blackout.

Understanding the Importance of Reloading Dies

Reloading dies are the tools that resize, decap, and seat bullets properly in your cartridge cases. For the 300 Blackout, precision is key because this caliber performs best with tight tolerances. Using the right dies helps maintain case life and improves overall shooting performance.

Types of Reloading Dies You Need

For the NAS3 300 Blackout, I found that a basic three-die set works perfectly:

  • Full-Length Sizing Die: This resizes the entire case so it fits properly in the chamber.
  • Expander Die: This widens the case mouth to accept the bullet (often integrated with the sizing die).
  • Seating Die: This seats the bullet to the correct depth and can also crimp the bullet if needed.

Some manufacturers offer a two-die set where sizing and expanding are combined, but I prefer the traditional three-die set for more control.

Material and Build Quality Matter

My advice is to invest in dies made from high-quality steel, preferably hardened or carbide. Carbide dies last longer and require less lubrication, which is a huge plus when reloading frequently. Cheaper dies can wear out quickly or deform, leading to inconsistent loads.

Compatibility With NAS3 and 300 Blackout

Make sure the dies you buy specify compatibility with 300 Blackout cartridges. Even though 300 Blackout shares some dimensions with the 5.56 NATO, it’s important to use dies specifically made for this caliber to avoid sizing issues. Also, confirm that the dies fit your NAS3 reloading press or turret.

Adjustability Features

I look for dies with easy-to-adjust bullet seating depth and crimping options. Being able to fine-tune seating depth is essential for optimizing accuracy with different bullet weights and styles. Some dies also include micrometer adjustments, which I find very helpful.

Brand Recommendations Based on My Experience

  • RCBS: Known for durable carbide dies and excellent consistency. Their 300 Blackout die sets have worked flawlessly for me.
  • Hornady: Offers both carbide and standard steel dies with great precision and adjustability. Their Lock-N-Load system makes die changes fast.
  • Lee Precision: A budget-friendly option that still delivers reliable results, especially if you’re just getting started.

Additional Tips I Followed

  • Always clean your brass before and after sizing to prolong case life.
  • Use proper lubrication as recommended for your dies to prevent sticking or damage.
  • Start with factory load data and work up loads gradually, checking for pressure signs.
  • Keep your dies well-maintained and store them in a dry place to avoid rust.

Final Thoughts

Choosing the right reloading dies for my NAS3 300 Blackout was an investment that paid off in better accuracy and reliability. By focusing on quality, compatibility, and adjustability, I made reloading a smoother and more enjoyable process. If you’re considering reloading for your 300 Blackout, take your time selecting dies that fit your needs and preferences — it makes all the difference.

Author Profile

Charlie Kirby
Charlie Kirby
I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.

In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.