Peterson Brass 300 Norma Mag Unprimed Box of 50

Peterson Brass 300 Norma Mag Unprimed Box of 50
Item #:PCC300NM50
$2.60 per piece
Buy 3 or more, save 5%! Only $123.49 per box!
Shipping: One flat fee of $12.95 per online order.
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Availability:In Stock
Due to the packaging and shipping process, case necks are often slightly dinged or bent and need to be rounded up and sized to give proper neck tension. New and/or fired cases must be full-length resized or have the expander ball of the sizing die run through the case neck prior to loading.
Read 10 Reviews

Product Information

All 50 count listings of Peterson Cartridge casings come in one of their plastic ammo boxes. 

Made in the U.S.A.

The .300 Norma Magnum is a cartridge that has begun to gain popularity in the long range shooting community. The .300 Norma Magnum is a .338 Norma Magnum case necked down to .308 caliber. This cartridge was named .300 Norma Magnum to differentiate it from the .308 Norma Magnum designed in 1960. The United States Special Operations Command (SOCOM) has selected .300 Norma Magnum as their new Advanced Sniper Rifle Cartridge (2016).   C.I.P. listed this cartridge in 2012 with a max pressure of 4400 bar.

Warning: Only use Peterson Cartridge Co. casings in firearms in good condition, designed, marked, and chambered for this cartridge. Do not use Peterson Cartridge Co casings for “fire forming” or any other purpose other than what they were designed and tested for. Peterson retains no responsibility for the enclosed casings if they are used outside of the manufacturer’s recommendations.

This is not loaded ammunition.


Read 10 Reviews - Average Rating: 4.8 stars

Beat brass

By John M. on Dec 30, 2022
I use Peterson Brass for 6.5 Creedmoor, 280 Ackley, 300 win mag and now 300 Norma. I have used Winchester Remington Lapua Nosler Hornady and ADG. Peterson is my favorite. ADG is also very good. I like them both better than Lapua.

Peterson .300 Norma Brass

By Levi V. on Jul 21, 2022
Fantastic brass. Showed up on time in good condition and it seems as if the brass has been organized in the case by weight and appears to be ready to load out of the box

Peterson 300 Norma Brass

By Casey M. on Nov 25, 2019
This lot of brass didn’t grow as much as some have described. Roughly 0.007” increase after one firing.

Consistent measurements and ready to load out of the box.

Peterson Brass

By Carlton Y. on Sep 11, 2019
A great decision. The brass arrived on time. The tracking was on point. The brass came packaged in individual sleeves instead of thrown on top of one another. The packaging made it easy to inspect each piece. A great product from a great distributor.
I can’t wait to load and fire form.

300 Norma brass

By James M. on Feb 08, 2019
My brass measured .016” shorter headspace than my Manson “go” gauge. I had to fireform the brass before it was completely usable in my chamber. After that, it was good.

300 norma peterson brass

By Jason W. on Nov 16, 2018
Awesome brass. You will not be disappointed


By Mario Q. on Nov 05, 2018
Brass looks great. Haven’t shot it yet but will soon

300 Norma Mag Bress

By Terry A. on Oct 11, 2018
I love this brass. Its base is very hard so it lasts a long time without expanding the primer pocket. And it is very uniform in sizing and overall weight.


By James M. on Aug 24, 2018
very well made brass , consistent, Like how they ship their brass in ammo boxes with foam padding to protect case mouth from dings in shipping unlike other manufacturers.

Will purchase more going forward.

300 Norma Mag-Peterson brass

By Geno V. on Aug 07, 2018
So far I am really liking this brass. It is of Lapua quality. I have 7 loads on 1 piece, primer pocket still tight. Is working much better for me than the Norma brand.
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