Peterson Brass

RL338

Handloader
Mar 23, 2017
783
705
I got excited when they announced the were making brass for more Weatherby calibers. I was left scratching me head when it was 7mm and 270 Wby , were is the 257 Wby? Well I got some 270 Wby that is going to become 257 😁
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SJB358

Ballistician
Dec 24, 2006
31,355
656
Ha! That’s the beauty is almost all of the good stuff is had by the 7 Rem Mag so I’ve made alot of 257 Wby for my brother using 7 Rem.

Looks like nice stuff.
 

xphunter

Handloader
Sep 15, 2005
425
648
Good for you. I like Peterson brass.
I use it for several cartridges, including my rear-grip 375 CT
 

JD338

Range Officer
Staff member
Nov 4, 2004
21,881
1,306
Always happy to see new sources for brass, especially good brass.

JD338
 

RL338

Handloader
Mar 23, 2017
783
705
Ha! That’s the beauty is almost all of the good stuff is had by the 7 Rem Mag so I’ve made alot of 257 Wby for my brother using 7 Rem.

Looks like nice stuff.
All my current brass for my 257 Wby in made from Winchester 7mm Rem Mag.
 

Cleveland48

Handloader
Jul 28, 2015
1,927
39
I got excited when they announced the were making brass for more Weatherby calibers. I was left scratching me head when it was 7mm and 270 Wby , were is the 257 Wby? Well I got some 270 Wby that is going to become 257 😁
View attachment 16605
That’s great brass. I’m using the first batch I bought of it. I quit counting after 25 reloads of small primer 6.5 creedmoor brass. I anneal after every firing, but I’ve still not lost a single piece to loose primer pockets. And I just loaded them up again this last weekend to shoot.
 

jimbires

Handloader
Aug 16, 2011
2,496
459
I haven't used Peterson brass yet . everything I read is positive about the brass . the guys I shoot long range with did a tour of their operation , they said it's pretty neat .
 

ShadeTree

Handloader
Mar 6, 2017
2,761
1,177
I know where there is some new 257 Weatherby brass if you need some. At least I spied a bag last time I was there. Hornady brass if I remember correctly. Do not remember the price. Let me know if you want me to check in on it for you. I will be there again in about 2 weeks.
 

RL338

Handloader
Mar 23, 2017
783
705
I quit counting after 25 reloads of small primer 6.5 creedmoor brass.
That’s pretty impressive. I do run SRP Peterson in both of my Creeds , but nowhere that many firings yet.
Let me know if you want me to check in on it for you. I will be there again in about 2 weeks.
Thanks for the offer , but I’m not a big fan of Hornady brass , I’ll pass.
 

ShadeTree

Handloader
Mar 6, 2017
2,761
1,177
That’s pretty impressive. I do run SRP Peterson in both of my Creeds , but nowhere that many firings yet.

Thanks for the offer , but I’m not a big fan of Hornady brass , I’ll pass.
Yep, understand. I have some for 250 Savage, is okay I guess, gets the job done, but can't say it's extremely long lasting.
 

Cleveland48

Handloader
Jul 28, 2015
1,927
39
Yep, understand. I have some for 250 Savage, is okay I guess, gets the job done, but can't say it's extremely long lasting.
I had some good accuracy loads with Hornady brass, I just loose primer pockets quick with it. These are not hot loads either. I do keep plenty of Hornady on hand though as a backup.
 

RL338

Handloader
Mar 23, 2017
783
705
With all the wind we are having this weekend and still to wet to do anything else I tested out my new brass. Since I cracked opened 1 of the 8lb jugs of WC867 , I tried it with Hornady’s 120gr HPs. I started low at 64grs to 66 then to 68. They were slow. Went back and added 10grs , now we were getting somewhere. 78grs at 3377 fps is a little too fast , no sign of pressure so I’m thinking it hides it like Lapua brass does. With my Winchester brass and RL-33 I run 3350s and that is a stout load. I loaded 6 each of 76 and 77 to try on paper when the weather cooperates.
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Picture is a little fuzzy as my phone kept focusing on brass.
 

RL338

Handloader
Mar 23, 2017
783
705
A little update on this combo. Group wise it mirrors my RL-33 load , except POI shift. To the right with the Peterson/WC867 como and low and left with Win. Brass and RL-33. The rifle is zeroed with 100gr TTSXs.
Peterson Brass
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Win. Brass
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The little black X is the actual point of aim.
 
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