Cheapest 357 Mag Brass in Stock
Live unit-price comparison for 357 mag brass across major reloading retailers. Listings refresh throughout the day; in-stock status reflects the most recent crawl. Sorted by price per ea.
- 1
357 Magnum Brass
The Brass King357 MagOnce-Fired$0.02/eaThe Brass King
$18.00 / 1000
- 2
Armscor 357 Magnum Brass
Arm or Ally357 Mag$0.02/eaArm or Ally
$19.30 / 1000
- 3
357 Magnum-Nickel
Blue Ridge Brass357 MagOnce-Fired$0.04/eaBlue Ridge Brass
$35.00 / 1000
- 4
NEW 357 MAG STARLINE 200+
Starline357 MagOnce-Fired$0.04/eaDiamond K Brass
$44.00 / 1000
- 5
Starline 357 Mag Brass
Starline357 Mag$0.05/eaArm or Ally
$48.09 / 1000
- 6
357 Mag XTP Stopping Power Bundle
Raven Rocks Precision357 Mag$0.18/eaRaven Rocks Precision
$179.95 / 1000
- 7
Ammo Inc 357 Mag Primed Brass –
Raven Rocks Precision357 Mag$0.22/eaRaven Rocks Precision
$109.95 / 500
- 8
Starline Brass 357 Mag Unprimed Bag of 100
Starline357 Mag$0.23/eaGraf & Sons
$22.59 / 100
- 9
Starline Brass 357 Mag Nickel Unprimed Bag of 100
Starline357 Mag$0.26/eaGraf & Sons
$25.50 / 100
- 10
Hornady Unprimed Brass Handgun Cartridge Cases .357 Mag 200/ct
Hornady357 Mag$0.30/eaNatchez Shooters Supplies
$59.99 / 200
- 11
Winchester Unprimed Brass Handgun Cartridge Cases 100/ct .357 Mag
Winchester357 Mag$0.33/eaNatchez Shooters Supplies
$32.99 / 100
- 12
Hornady Brass 357 Mag Unprimed
Hornady357 Mag$0.65/eaGraf & Sons
$64.99 / 200
- 13
CCI Blazer Brass Handgun Ammunition .357 Mag 158 gr JHP 1150 fps 50/ct
CCI357 Mag$0.77/eaNatchez Shooters Supplies
$38.49 / 50
- 14
Winchester Brass 357 Mag Unprimed Bag of 100
Winchester357 Mag$0.86/eaGraf & Sons
$85.99 / 100
- 15
Hornady Brass 357 Magnum 5/Cs
Hornady357 Mag$12.19/eaPowder Valley
$60.95 / 5
Stock changes hourly.
Get an email when new 357 mag brass hits the shelves at sub-MAP prices.
Common questions about 357 mag brass
- Where is the cheapest place to buy 357 mag brass right now?
- We refresh prices throughout the day and rank every in-stock listing by unit price. Today, in-stock prices range from $18.00 to $179.95 across the 8 retailers we track. The top-ranked listing on this page is the lowest unit price our crawl found in the most recent run.
- How often is this price list updated?
- Listings refresh on an hourly cadence. The "Updated" date in the trust strip above shows when the most recent listing was crawled. In-stock status reflects what each retailer's product page said at that moment — by the time you click through, an item that was in stock may be sold out, especially for high-demand calibers and primers.
- Why are prices so different across retailers?
- Pack size, lot size, and shipping policy create most of the variance. Hazmat fees on powder and primers can swing the effective per-unit cost by 30% or more depending on how many qualifying items you order together. The unit prices on this page already normalize for pack size, but always verify the pack size and shipping fees on the retailer's site before checkout.
- Why is some 357 mag brass out of stock?
- Reloading components — especially primers and certain handgun powders — go through cyclical shortages driven by manufacturer scheduling, ATF transit rules, and election-year demand spikes. We don't surface listings that are out of stock here, but you can subscribe to the back-in-stock alert above and we'll email the moment something hits the shelves.
- Do you sell 357 mag brass directly?
- No — Primers and Powder is an independent price-comparison tracker. We don't carry inventory and we aren't a retailer. Every listing on this page links to a third-party retailer where the actual transaction happens.