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SKU#RCB-87067 RCBS
In Stock

RCBS Formula 1 Walnut Shell Media - 5lb / 2.26kg

2 in stock
Price shown excludes VAT. The applicable VAT rate for your delivery country will be calculated and added at checkout.

If you want your brass coming out clean, smooth, and ready to reload without hassle, RCBS Formula 1 Walnut Shell Media is the workhorse that gets it done. It’s finely ground walnut designed to strip carbon, dirt, and residue fast in a vibratory tumbler, even getting into those awkward primer pockets and case necks. Chuck it in, let it run, and you’ll get consistently clean brass without overthinking the process.

-Nathan (Technical Advisor)

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Product Information FIND OUT MORE
DESCRIPTION

The RCBS Formula 1 Walnut Shell Media is a high-quality dry tumbling solution designed to deliver fast, effective cleaning of heavily soiled brass cases. Suitable for use in both sidewinder and vibratory case cleaners, this media is ideal for reloaders who want reliable results with minimal effort.

Made from finely ground walnut shell media, Formula 1 is processed to a 12/12 sieve size, allowing it to clean quickly while reaching into hard-to-access areas of brass cases. This ensures a thorough clean that prepares cases perfectly for the next stage of reloading.

Supplied in secure, easy-to-store packaging, the media is simple to handle and long-lasting. Each pack also includes one packet of RCBS polishing compound, helping to enhance the final finish of your brass for a cleaner, brighter result.

FEATURES
  • Finely ground walnut shell media formulated specifically for fast and effective brass cleaning

  • 12/12 sieve size for efficient removal of dirt, carbon, and residue from heavily soiled cases

  • Compatible with sidewinder and vibratory case cleaners, offering versatile use across different setups

  • Excellent at reaching hard-to-clean areas, including inside case necks and primer pockets

  • Ideal for routine and heavy-duty brass cleaning, helping prepare cases for consistent reloading

  • Supplied in secure, durable packaging that is easy to store and handle

  • Includes one packet of RCBS polishing compound to improve brass brightness and overall finish

  • Long-lasting and economical, providing reliable performance over multiple cleaning cycles

WHAT'S IN THE BOX
  • RCBS Formula 1 Walnut Shell Media
FREQUENTLY ASKED QUESTION(S)

1. What is RCBS Formula 1 Walnut Shell Media used for?
It’s a dry tumbling media used in vibratory or rotary case cleaners to clean fired brass cases before reloading.

2. What makes walnut shell media different from corn cob media?
Walnut shell is more abrasive, so it’s better for heavy cleaning and removing carbon buildup, while corn cob is more for polishing and shine.

3. What does it clean on the case?
It cleans the outside of the brass and helps remove fouling from hard-to-reach areas like case necks and primer pockets.

4. Can it be used in any tumbler?
Yes, it works in most vibratory and compatible rotary case cleaners designed for dry media.

5. Does it come pre-treated?
It includes polishing compound in the packaging to help improve brass brightness during cleaning.

6. How long does a batch of media last?
It’s reusable over many cycles, but it gradually breaks down and gets saturated with carbon, so it needs replacing once it stops cleaning effectively.

7. Will it polish brass to a mirror shine?
Not by itself—walnut cleans well but usually gives a dull-to-bright finish unless combined with polish or followed by corn cob media.

8. Is it safe for all calibres?
Yes, it’s suitable for a wide range of rifle and pistol brass sizes in standard reloading use.

9. Is it messy to use?
It can create fine dust over time as it breaks down, so some care is needed when handling and replacing it.

10. Why do reloaders use walnut media instead of just cleaning by hand?
Because it saves a lot of time and gives consistent, uniform cleaning across large batches of brass, which improves reliability in the reloading process.

 
DELIVERY & RETURNS
Shipping to Europe

Delivery costs & estimated arrival

Find your country below for the delivery charge and how long your order should take to reach you. All orders ship with FedEx. Estimates are in working days and exclude weekends and public holidays.

Country Up to 2kg 2kg – 30kg Estimated delivery
Order under €350 Order €350 & over Order under €350 Order €350 & over
Austria€11.95€26.95€26.95€26.955-7 working days
Belgium€8.95€14.95€14.95€14.954-6 working days
Bulgaria€11.95€31.95€31.95€31.957-9 working days
Croatia€11.95€31.95€31.95€31.956-8 working days
Cyprus€14.95€89.95€89.95€89.95Contact us
Czechia€10.95€21.95€21.95€21.955-7 working days
Denmark€10.95€21.95€21.95€21.954-6 working days
Estonia€11.95€31.95€31.95€31.956-8 working days
Finland€11.95€26.95€26.95€26.955-7 working days
France€10.95€21.95€21.95€21.954-6 working days
Germany€8.95€14.95€14.95€14.955-7 working days
Greece€11.95€31.95€31.95€31.958-10 working days
Hungary€11.95€31.95€31.95€31.955-7 working days
Ireland€6.95€6.95€8.95€8.952-4 working days
Italy€10.95€21.95€21.95€21.955-7 working days
Latvia€11.95€31.95€31.95€31.956-8 working days
Lithuania€11.95€31.95€31.95€31.956-8 working days
Luxembourg€11.95€31.95€31.95€31.955-7 working days
Malta€14.95€89.95€89.95€89.95Contact us
Monaco€10.95€21.95€21.95€21.954-6 working days
Poland€10.95€21.95€21.95€21.955-7 working days
Romania€11.95€31.95€31.95€31.956-8 working days
Slovakia€11.95€31.95€31.95€31.955-7 working days
Slovenia€11.95€31.95€31.95€31.956-8 working days
Spain€11.95€26.95€26.95€26.955-7 working days
Sweden€11.95€26.95€26.95€26.955-7 working days

Returns & withdrawal

Which option you use depends on why you are sending the item back.

Changed your mind?

You have 14 days from receiving your order to withdraw from your purchase. Use our Withdrawal from Contract form to tell us. It is the quickest way, and we will then email you a free returns label.

If you would rather post the item back yourself to our returns address in Ireland, you pay the postage. Full details are on our Returns page.

Withdrawal from Contract

Faulty, damaged or wrong item?

If your item arrived faulty, damaged or not what you ordered, please follow the steps on our Returns page. We cover the cost of returning these items.

Full details of all our return options are on that page.

Returns page

Delivery prices are shown in euros and confirmed at checkout.

EU PRODUCT SAFETY AND COMPLIANCE

Product safety information is available on request from our customer service team.

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