New Peterson Brass

[Prose]

Bought 150 cases of SRP Peterson Brass in 6.5 CM (It's okay I already have a .260 Rem).

The quality is second to none. Have used Lapua for years, but this stuff is immaculate. Absolute uniformity in all aspects, packaged very nicely, lower cost, and made in America.

The small primer feature is very neat and am hoping that these 150 cases make it for the life of the barrel. From what I've read, that is certainly possible.

 

[Dusty Stevens]

Once they get going on other calibers ill actually use ill be in on some.

 

[Ledd Slinger]

It is very nice brass, but I did have issues with their 300 Norma Mag brass seating primers. I wanted to get one firing on the primer pockets before uniforming them and a lot of the cases would not fully seat a LR primer no matter how much pressure I put on the ram of my press. Luckily I got them all in far enough to chamber and fire the rounds since I had my headspace set a little long on my 300 Norma Mag Improved chamber.

The necks were all perfectly concentric with the shoulder straight out of the box and my neck turner was able to make perfectly even cuts on the shoulders all around the necks. All the case lengths had a greatest spread of .003" from the shortest to the longest. Have not measured volume after fire-forming yet, but other than the primer pockets, the quality control appears to be very good.

The ammo boxes they come in are great. I use 230gr bullets seated long and out of the donut area. The boxes have plenty of room to store my loaded rounds with the tip up. Very nice touch that no other manufacturer has ever done.

 

[Kurt Blasser]

I just fired 20 of the large rifle Peterson brass and have had the opposite problem after brass prep. Of the 20 cases, 3 have such large primer pockets I can put the primer in and watch it fall in. Comes right out. Anyone have that experience?

 

[David247]

It is very nice brass, but I did have issues with their 300 Norma Mag brass seating primers. I wanted to get one firing on the primer pockets before uniforming them and a lot of the cases would not fully seat a LR primer no matter how much pressure I put on the ram of my press. Luckily I got them all in far enough to chamber and fire the rounds since I had my headspace set a little long on my 300 Norma Mag Improved chamber.

The necks were all perfectly concentric with the shoulder straight out of the box and my neck turner was able to make perfectly even cuts on the shoulders all around the necks. All the case lengths had a greatest spread of .003" from the shortest to the longest. Have not measured volume after fire-forming yet, but other than the primer pockets, the quality control appears to be very good.

The ammo boxes they come in are great. I use 230gr bullets seated long and out of the donut area. The boxes have plenty of room to store my loaded rounds with the tip up. Very nice touch that no other manufacturer has ever done.

Yikes!!! I am waiting on a new 300 Norma build to get finished soon and I have 100 new Peterson cases sitting on my bench. Hope to have better results than the above. After doing some preliminary measuring I was very pleased but these priming issues sound really bad. I can't imagine they would spend so much energy on the rest of the case and have such problems with the primer pockets. Time will tell.

 

[Ledd Slinger]

Yikes!!! I am waiting on a new 300 Norma build to get finished soon and I have 100 new Peterson cases sitting on my bench. Hope to have better results than the above. After doing some preliminary measuring I was very pleased but these priming issues sound really bad. I can't imagine they would spend so much energy on the rest of the case and have such problems with the primer pockets. Time will tell.

I talked with Ben Preston at Peterson Cartridge about the issue. On the phone he said they are "known for tight primer pockets". Some of the cases were so bad that my uniformer was cutting out the side walls and getting stuck as I ran it in the pocket. I told him these are more than tight, these are unusable without heavy reaming and swaging. I could eventually get primers seated, but it took a lot of work on the pockets. Shouldnt be that way. I was using Federal GM215 Match primers. Same lot I use in all my other magnum cases with no issues.

He said they would take care of me. Said he had GM215M primers on hand and to send him some of my cases for testing. Was suspicious that my brass was some of the first cases they produced for the 300NM. Sent him 5 unmodified virgin cases with the Lot and QC number last week. Will call him for an update sometime this week and let you all know how it goes.

 

[Ledd Slinger]

So Ben got back to me today. Sending me a new box of brass. Gotta love a company that stands behind their product

 

[dbduff]

Having similar issues with primer pockets with SRP Peterson 243 cases. Difficult to clean pockets as carbide cutter quickly gets stuck before reaching bottom of pocket. Not so tight as to prevent seating of primer, but after multiple firings, may become an issue. Otherwise, really uniform brass.