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.357 MAGNUM

Reload With the Finest: Once-Fired or Brand New 357 Brass

Need some 357 Mag once fired casings. Diamond K Brass sells the best once fired 357 Mag brass online. We offer once fired reloading supplies, brass components, and bullets for sale. The 357 Magnum brass is always a favorite with reloaders.  Order online today and it ships tomorrow.

Diamond K Brass offers high quality 357 Mag once fired brass ready to ship.  We offer our 357 Mag once fired brass casings in both Brass and Nickel, anywhere from 500 pieces to 5000 pieces. Diamond K Brass offers our 357 Mag once fired brass cleaned from any debris. The 357 Mag once fired brass will consist of mixed manufacturer headstamps.

Also check out our 357 Mag Nickel casings.  These second to none 357 Mag Nickel casings that have not been processed.  

Need projectiles to complete your reloading process?  We have them.  Take a look at all the options we offer to go along with your once fired 357 Mag brass or nickel casings. 

Diamond K Brass is known to carry the highest quality brass available.  Our customer service is the best in the industry.  Check out all of our testimonials.   

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.357 MAG 500+

.357 MAG 500+

Reload With the Finest: Once-Fired 357 Brass Cases

Mixed Commercial Headstamps

*Tumble Polish Available*

$70.00

$55.00

21% Off  
Quantity OUT OF STOCK
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.357 MAG 1000+

.357 MAG 1000+

Mixed Commercial Headstamps

May contain both nickel and brass finish

*Tumble Polish Available*

$130.00

$110.00

15% Off  
Quantity OUT OF STOCK
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NEW 357 MAG STARLINE 200+

NEW 357 MAG STARLINE 200+

Factory New Starline .357 Mag Brass for Sale 200+ Count

Magnum Small Pistol Primer

1.275 - 1.285 O.A.L.

$38.00

 
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NEW 357 MAG STARLINE 500

NEW 357 MAG STARLINE 500

Factory New Starline .357 Mag Brass for Sale 200+ Count

Magnum Small Pistol Primer

1.275 - 1.285 O.A.L.

357 Magnum brass cases are basically a lengthened version of .38 special brass cases. 357 Magnum is one of the most popular handgun calibers in the world. Almost every revolver manufacturer makes a firearm in this chambering. It is also used in many lever action carbines.


$110.00

 
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.357 MAG NICKEL 500+

.357 MAG NICKEL 500+

Mixed Headstamps

All Nickel Plated Finish

*Complimentary Tumble Polish*

$65.00

 
Quantity OUT OF STOCK
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.38/.357 CAL (.357) 125gr FP 500 ct.

.38/.357 CAL (.357) 125gr FP 500 ct.

.357 Diameter

125gr

Flat Point

Max Velocity: 1250 fps

$60.00

 
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Testimonials
Ordered 5000 of 9mm, excellent as far as I can tell. planning on placing an order for 45 ACP. Fast delivery,
thank you DKB.
Alexander Beltran
Sep 2, 2017
have ordered several times,no complaints at all just ordered 9mm,38spl x 500.always good product and fast servicethey are number 1 with me
mike
Jan 25, 2017
I buy 500 each of various pistol brass, 40, 45, 380, etc. and load with plated lead bullets. Diamond K works great for me! I don't worry about what I can't find on the ground anymore.
Pat
Aug 3, 2017
It seemed to me that shipping charges were a little high, BUT, the products and the friendly and FAST service proved worth it. Tim M. Montana
Tim Michaels
Mar 7, 2017
Made my first order of LC 308 processed brass and was not disappointed. Trim length is spot on, clean nice brass.
Quick shipping and all is good. Look forward to doing business again in the future.
Kyle Owens
Dec 8, 2016
Once again, the crew at Diamond K shows their class. I ordered brass from them and noticed that the usps tracking showed the package delivered about an hour after it shipped. The folks at Diamond K called me this morning to explain what happened. The mistake was with the postal service- not DK. I've said this before- I wish that these folks worked for me. The dedication to customers that they demonstrate is the gold standard that other companies should aspire to reach.
Mike C.
Jul 6, 2015
The usual rapid service brought my order of "1000+ S/W40 Brass some Nickle". The count was, 1028 Great Brass, 38 Nickle, 2-10mm, (I was looking at a10mm pistol) (or a little work for the case trimmer) 1-38spl, and 1-224. These cases all have the same base diameter, so mystery somewhat solved. But the shoulder of the 224 turned out to be the perfect tool for restoring the mere 9 brass 40s with minor dings to there case mouths.
OUSTANDING - SERVICE - PRODUCT - PRICES
Clifford GALLAGHER
Jul 25, 2021
I have placed several orders for brass and projectiles with these folks since the first of the year. Great variety of products, best prices on the net and fast shipping. Diamond K is my go to source for reloading componentes.
Fred
Fred Woodworth
Apr 20, 2018
These people at Diamond K Brass do their very best to give us great service. I thank y'all for the great service, always get my stuff within 2 days never any errors or anything. Professionals in my book.

Norm Perez
45ACP/44 Mag Handgunner
Norm Perez
May 13, 2016
Very satisfied with my first order. After spending countless trips to the range (and many backbreaking hours) just to collect brass for my hobby, finally the end of all that. You have the best prices out there, I’ve researched greatly and there is no comparison. Thank you D.K. for allowing me to spend more time enjoying reloading/target shooting!
Mark O.
Feb 24, 2019
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