Graf Corn Cob Untreated Tumbler Media 9 Pound

Graf Corn Cob Untreated Tumbler Media 9 Pound
Item #:GR10
Shipping: One flat fee of $12.95 per online order.
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Availability:In Stock
Read 17 Reviews

Product Information

Sold by volume, weight is approximate.

For use with vibratory case tumblers. Corn media is more porous than walnut and therefore absorbs brass polish slightly better than walnut. As a result, corn is an excellent polishing media. For best results, treat media with Graf Hi-Luster Brass Polish (sold separately).

Read 17 Reviews - Average Rating: 4.4 stars

works fine but will get stuck in small pistol primer pockets

By Mayer T. on Apr 22, 2024
just a heads up, i purchased this product without reading all the reviews.
it does work well, however as noted in several of the reviews, if you've removed the primer prior to employing the media quite a few cases will be left with media stuck in the primer pocket.

I do prefer that the whole case including the primer pocket are clean prior to loading. To that end i found that i must also employ a primer pocket/hole cleaner as well.

Corn Com Media - It doesn't last forever!

By William W. on Jan 28, 2024
I have had the same vibratory case tumber for decades and with media that is not already loaded with grime it does a fine job. If it is not a light tan color change it out, it will clean faster and cleaner which saves your reloading dies..

Add a bit of Graf's polish, clean cases in 90 minutes

By David B. on Oct 31, 2023
My results with Graf's case cleaning products have been very positive. I use this corn cob media with a little Graf's polish in an old Lyman vibratory machine, and in 60-90 minutes, all but the most tarnished cases are shiny and ready to work with.

corn cob media

By Michael B. on Dec 30, 2022
I have used this for many, many years. Best price and service on the web. ordered late Thursday evening and received it Friday. Nobody beats Graf' shipping. A bonus is being able to choose your shipper(FED EX delivers on Saturday).

Grafr Corn Cob Media

By Michael V. on Oct 01, 2020
When you are using this media, put a few drops of water in it to stop the dust, this also stops it from clogging up the primer pocket!!!!!!!!!!!!!!

corn cob

By Russell F. on Aug 27, 2020
yes this is corn cob media, just like any other, except the pricing is better at Grafs. Plus their service is top of the line

Corn cob media

By Angel M. on Mar 19, 2020
Good quality great price!

Graf’s Corn Cob Media

By Jim B. on Oct 29, 2019
This material does a good job when left in the tumbler 3-4 hrs. It’s pretty dusty and it does clog in the primer flash holes. Best to use before depriming by the you must clean the primer pocket.

Untreated Corn Cob Media

By Daniel S. on Apr 19, 2019
Been using it for years to clean my brass. Best price I've found in a commercial company.

Corn Cob Media

By Larry C. on Mar 15, 2019
I have had the best luck by running the dirty casings thru the media prior to resizing the casings, This way I don't have to worry about media getting lodged in the flash holes.

by Larry C

Graf case cleaning media

By Michael B. on Mar 13, 2019
Works well and is inexpensive too. Have run about 3 lbs through a few cleanings with good results.

Clean brass

By Brad V. on Feb 18, 2019
Works as expected at a great price.

Great for Initial Cleaning

By Steven M. on Jan 04, 2019
Been buying Graf's corn cob media for years. Best price online for media. My take is that corn cob is corn cob. I use corn cob for for my initial brass cleaning with primer still in BEFORE I resize. Then walnut media for a polish, then resize. After resizing (especially for rifle brass to get rid of the resizing lube) I polish again with walnut media. Lengthens the brass prep process but gets the brass looking good. The walnut media is small enough that it does not get stuck in the primer pocket. Ready to load.


By William Z. on Nov 24, 2018
Great product, better than Lyman,just need to add polish

This media works just fine

By Tim C. on Mar 30, 2014
I have been using Graf’s corn cob media for over 10 years and love it. Yes, it can plug a primer pocket and sooner or later it will. The solution I found is a dentist pick which works great for removing the media from the flash hole. I have also used, over the years, every media on the market and Graf’s media is far cleaner than anyone else’s.

Graf's corn cob media

By Danny C. on Jul 20, 2013
tumble your brass before you decap your cases! after you clean the pockets with a pocket brush. I have found that this is the fastest and easiest way to clean my brass, but if you like cleaning the flash holes then decap them first!

Graf Corn Cob Untreated Media

By Allen C. on Mar 29, 2013
I spent 60 min. cleaning out the primer flash holes on a batch of two hundred .223 Rem. cases after using this media for the first time. It cleaned the brass well enough, but the mesh size is not well suited for small rifle primer pockets, i.e. it sticks in the flash holes and blocks them. I would not have purchased this product if I had known this in advance. It might work O.K. for cases with large rifle and pistol primers, I will have to try it out and see. Not Recomended!!!
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