
Availability: In Stock
If you reload ammunition, you know that clean brass is the foundation of consistent, safe loads. The Mec Brass Prep 1311103 Corn Media 14/20 Grit is a tumbling media designed to work inside your vibratory brass tumbler, scrubbing away powder residue, primer pockets, and surface dirt from fired cases. This corn-based media strikes a balance between aggressive enough to cut through buildup and gentle enough to avoid damaging case walls or necks—making it a practical choice for handloaders who need their brass clean and ready for the next stage of prep.
Corn media is a popular alternative to walnut shell and steel shot among reloaders because it's economical and works reliably in standard vibratory tumblers. The 14/20 grit size is medium: coarse enough to tackle moderately dirty brass without excessive tumbling time, but not so aggressive that it risks surface damage on delicate calibers or thin-walled cases. Whether you're processing a few boxes from last season's hunt or running a steady supply through your loading bench, this media will help you maintain the brass quality that translates to tight groups and reliable ignition.
One practical note: corn media does break down over time as it tumbles, especially under heavy use. Plan to screen and refresh your media periodically to keep it working at peak efficiency. Many reloaders also appreciate that corn media can be composted or disposed of easily once it's spent—unlike some alternatives that hang around indefinitely.
| Product Name | Mec Brass Prep Corn Media |
| Manufacturer Part Number | 1311103 |
| Brand | Mec-Gar USA |
| Media Type | Corn |
| Grit Size | 14/20 |
| Application | Vibratory tumbler brass cleaning |
Yes. The Mec Brass Prep 14/20 grit is designed for use in standard vibratory tumblers and will work with most common models on the market.
The 14/20 size is a middle-ground grit—coarse enough to clean moderately fouled brass efficiently without excessive tumbling time, but not so aggressive that it typically damages case walls or necks.
Corn media breaks down gradually during use. Most reloaders screen their media periodically and refresh it as needed, depending on tumbling frequency and how much brass they process.
The 14/20 grit is suitable for routine brass cleaning across most common handloading applications, though reloaders with particularly delicate or thin-walled cases may prefer a finer grit.

SKU: 144599985 • Width: 8.3in • Height: 6.4in • Depth: 10.1in • Weight: 6.4oz





Availability: In Stock
If you reload ammunition, you know that clean brass is the foundation of consistent, safe loads. The Mec Brass Prep 1311103 Corn Media 14/20 Grit is a tumbling media designed to work inside your vibratory brass tumbler, scrubbing away powder residue, primer pockets, and surface dirt from fired cases. This corn-based media strikes a balance between aggressive enough to cut through buildup and gentle enough to avoid damaging case walls or necks—making it a practical choice for handloaders who need their brass clean and ready for the next stage of prep.
Corn media is a popular alternative to walnut shell and steel shot among reloaders because it's economical and works reliably in standard vibratory tumblers. The 14/20 grit size is medium: coarse enough to tackle moderately dirty brass without excessive tumbling time, but not so aggressive that it risks surface damage on delicate calibers or thin-walled cases. Whether you're processing a few boxes from last season's hunt or running a steady supply through your loading bench, this media will help you maintain the brass quality that translates to tight groups and reliable ignition.
One practical note: corn media does break down over time as it tumbles, especially under heavy use. Plan to screen and refresh your media periodically to keep it working at peak efficiency. Many reloaders also appreciate that corn media can be composted or disposed of easily once it's spent—unlike some alternatives that hang around indefinitely.
| Product Name | Mec Brass Prep Corn Media |
| Manufacturer Part Number | 1311103 |
| Brand | Mec-Gar USA |
| Media Type | Corn |
| Grit Size | 14/20 |
| Application | Vibratory tumbler brass cleaning |
Yes. The Mec Brass Prep 14/20 grit is designed for use in standard vibratory tumblers and will work with most common models on the market.
The 14/20 size is a middle-ground grit—coarse enough to clean moderately fouled brass efficiently without excessive tumbling time, but not so aggressive that it typically damages case walls or necks.
Corn media breaks down gradually during use. Most reloaders screen their media periodically and refresh it as needed, depending on tumbling frequency and how much brass they process.
The 14/20 grit is suitable for routine brass cleaning across most common handloading applications, though reloaders with particularly delicate or thin-walled cases may prefer a finer grit.

SKU: 144599985 • Width: 8.3in • Height: 6.4in • Depth: 10.1in • Weight: 6.4oz