I have spent years cleaning dirty brass cases to get them ready for reloading, and I have tested almost every media out there. Through hours of tumbling, I have found that Frankford Arsenal Corn Cob Media and Frankford Arsenal Walnut Hull Media each serve a very distinct purpose on the reloading bench. In this review, I will break down how both perform so you can decide which one fits your reloading workflow.
Frankford Arsenal 7 lb Box of Corn Cob Media for Case Tumbling, Ammo Reloading and Shooting Bags, tan
I rely on this 7 lb of media in a cardboard box whenever I want my brass to have a brilliant, factory-like shine. The Frankford media is designed to quickly and efficiently remove dirt, grit and powder residue from cases, but its real strength lies in final polishing. You will find it incredibly easy to use because you just pour into the tumbler of your choice and get to cleaning without any complicated prep work. This media offers excellent versatility as it works for polishing brass and can also be used to fill shooting bags for the range. It is highly durable and can be used multiple times before needing to change out with new media.
- 7 lb cardboard box provides a generous supply of clean, dry corn cob grit.
- Specially formulated to remove dirt, grit, and powder residue without damaging the brass.
- Highly durable composition allows you to reuse the media for multiple tumbling cycles.
- Dual-purpose versatility makes it perfect for case polishing or filling shooting rests.
Pros
- Leaves a beautiful, high-gloss finish on brass cases.
- Does not create excessive dusty residue when tumbling.
- Flows easily out of primer pockets and flash holes.
Cons
- Takes longer to scrub off heavy, baked-on carbon.
- Cardboard packaging can degrade if exposed to moisture in the workshop.
Best for: Reloaders who want highly polished, shiny brass and primarily clean lightly soiled cases.
Expert Opinion: If your main goal is cosmetic appeal and a factory-bright shine, corn cob is your best choice. It acts like a buffer, gently scrubbing the surface to a mirror finish.
Frankford Arsenal 15 lb Bag of Walnut Hull Media for Case Tumbling, Ammo Reloading and Shooting Bags
When I deal with extremely dirty, tarnished brass picked up from outdoor ranges, I grab this heavy-duty media. The package delivers 18 lb of media in a cardboard box which gives you plenty of material for massive cleaning projects. This Frankford media is designed to quickly and efficiently remove dirt, grit and powder residue from cases that have seen better days. It offers the same level of ease of use as corn cob since you just pour into the tumbler of your choice and get to cleaning. Beyond scrubbing brass, the versatility of this media allows it to fill shooting bags to create a solid, heavy rest at the range. You will find it remains incredibly durable so you can clean dozens of batches before it loses its abrasive edge.
- 18 lb bulk package ensures you have enough abrasive media for long-term reloading needs.
- Hard, angular walnut hulls quickly remove heavy carbon buildup and stubborn tarnish.
- Simple pour-and-run operation works flawlessly in standard vibratory tumblers.
- Multi-use versatility allows the dense material to double as heavy shooting bag filler.
Pros
- Cuts through tough carbon and oxidation much faster than softer media.
- Dense hulls make shooting bags extremely stable on the bench.
- Reusable for many cycles before the abrasive edges break down.
Cons
- Can leave a matte, dull finish rather than a bright shine.
- Dust levels can be high without an added liquid polish or dryer sheet.
Best for: High-volume shooters who need to clean heavily oxidized or dirty range brass quickly.
Expert Opinion: Walnut media is the workhorse of the reloading bench. It behaves like liquid sandpaper, stripping away carbon crust fast so you can get to reloading sooner.
Brass Cleaning Media Corn Cob vs Walnut: Key Differences That Matter
Performance: Abrasiveness vs. Polishing Power
Walnut hulls are highly aggressive. They scrub away baked-on powder residue and heavy oxidation with ease. Corn cob is much softer. It excels at polishing the brass to a high shine but struggles with heavy crust. If you put dirty range pickup brass in corn cob, it will take hours to look clean. If you put it in walnut, the black crust disappears quickly, though the brass will look somewhat dull.
Price and Value Analysis
Looking at the cost per pound, the bulk walnut package offers incredible value for high-volume reloaders. You get more total media by weight, which lowers your long-term maintenance costs. The corn cob package is smaller. It costs less upfront, making it a great entry point for hobbyists who do not reload thousands of rounds a month. Both materials last for many cycles, so you will get your money’s worth out of either option.
Material and Build Quality Comparison
Frankford Arsenal sources high-quality, clean media for both products. The corn cob grit is sorted to minimize dust and prevent clogged primer pockets. The walnut hulls are ground to a uniform size to ensure consistent scrubbing action. Both products come in sturdy packaging, though the heavy cardboard box for the walnut media requires careful storage to avoid spills.
User Experience Differences
Using corn cob is a clean process. It generates very little dust, and the brass comes out feeling smooth. Walnut tends to be dustier. I often throw a torn used dryer sheet into the tumbler with walnut to capture the fine black residue. When it comes to clearing the cases, corn cob grains sometimes stick inside smaller rifle necks. Walnut hulls are denser, so they usually pour out of the cases more easily during the separation process.
Which Should You Choose?
Your choice depends entirely on the condition of your brass and your cleaning goals. If you are prepping tarnished range brass that has been sitting in the dirt, the walnut hull media is the better tool. It cuts through grime quickly, saving you valuable time.
If you shoot indoor ranges and your brass is already relatively clean, the corn cob media is the ideal choice. It will give you that gleaming, factory-fresh look that makes reloading so satisfying.
My personal setup uses both. I run dirty brass in walnut first to strip the carbon, then finish it in corn cob with a splash of polish for that mirror shine. If you can only buy one, choose based on the starting condition of your brass.
Frequently Asked Questions
Q: Which is better for dirty range brass in the brass cleaning media corn cob vs walnut debate?
A: Walnut hull media is far superior for dirty range brass. Its angular edges act like tiny scrapers to remove baked-on carbon and dirt much faster than corn cob.
Q: Can I mix both options together?
A: Yes, many reloaders create a custom blend. Mixing them allows you to get a balance of fast cleaning from the walnut and decent polishing from the corn cob.
Q: How many times can I reuse Frankford Arsenal media before replacing it?
A: You can typically reuse both types of media for 10 to 15 cycles. You will know it is time to replace the media when the cleaning times start taking significantly longer or the brass comes out looking dusty.
Q: Does walnut media get stuck in primer pockets?
A: Walnut can occasionally get stuck, but it generally flows out easier than corn cob due to its density. Using a media separator helps clear the flash holes quickly.
Q: When comparing brass cleaning media corn cob vs walnut, which one creates more dust?
A: Walnut media typically creates more dust during the tumbling process. Adding a moist dryer sheet or a capful of brass polish can help trap the dust and keep your reloading area clean.
Q: Can I use these products to fill shooting rests?
A: Yes, both products work well as shooting bag fillers. Walnut is heavier and creates a more stable, solid rest, while corn cob makes for a lighter bag that is easier to carry around the range.
Q: Do I need to add polish to corn cob media?
A: You do not have to add polish, but doing so will dramatically improve the final shine. Just make sure to let the polish incorporate into the media for a few minutes before adding your brass.
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Kris S. Cary is the founder of KitchinPrep.com and a passionate kitchen enthusiast with over three years of experience in the culinary world. A graduate of the Culinary Management, A.S. program at Daytona State College in Daytona Beach, USA, Kris spent two years honing their skills and deepening their love for cooking and kitchen essentials. Specializing in kitchen baking tools, Kris is dedicated to sharing practical tips, insightful product reviews, and expert guides to help home cooks elevate their baking and cooking game. When not testing the latest kitchen gadgets, Kris is likely whipping up something delicious or dreaming up new ways to inspire culinary creativity.