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Peterson fat neck brass?

DngBat7

Silver $$ Contributor
I am shooting 6.5, (no turn neck). Peterson makes a fat-neck brass. Is that a good option for someone running a standard chamber to get the effect of a custom turn neck chamber? I am assuming so, but figured I’d ask the pros

Also, if that’s the case, I will go with the Peterson fat neck brass. But is it considered Peterson is as good as lapua?
 
You better call Pederson directly on that one. They are very responsive and the owner answers many of the phone calls.
 
fat-neck brass
good option
standard chamber
custom turn neck chamber

4 undefined items in 1 question..
Man. Everyone wants specifics. ;). Fat neck to be turned to factory chamber = custom neck chamber with neck turned brass?
 
The Peterson Cartridge's 6.5 Creedmoor Fat-Neck™ has been developed for competition shooters who prefer to turn down the neck walls of their casings. With a neck wall thickness between .0155 - .0160, the Fat-Neck™ provides 6.5 Creedmoor shooters with enough material to turn down and reach exact fit for the chamber of their gun.
 
With a custom tight neck, one needs to neck turn. The result is more consistent neck wall thickness to achieve more consistent neck tension. If you won't be neck turning the Peterson brass, you likely won't get the same level of neck thickness consistency as a turned piece of brass. In other words, all you'd be getting with the fat neck is less neck clearance.

However, I don't feel the need to turn my Lapua brass since I am satisfied with the level of neck wall consistency already. Based on the 50 pieces of Peterson on hand, I feel the same for the Peterson brass.

The Peterson brass quality and consistency is comparable to the Lapua, and it's great to support an American company.
 
The Peterson Cartridge's 6.5 Creedmoor Fat-Neck™ has been developed for competition shooters who prefer to turn down the neck walls of their casings. With a neck wall thickness between .0155 - .0160, the Fat-Neck™ provides 6.5 Creedmoor shooters with enough material to turn down and reach exact fit for the chamber of their gun.
Guess that’s my confirmation
 
I've found the Peterson SRP brass to be better than the Lapua SRP in my 6.5 Creedmoor. By better I mean less neck wall thickness variation and tighter primer pockets. However, that may be due to the particular brass lots I have. I also anneal after every firing on an AMP annealing machine. I'd be interested in trying some Peterson Fat Neck brass in my hunting rifles.
 
I have 6mm creedmoor,Lapua and Peterson brass,necks are .015-.0155 maybe a few at .016.I have a fairly tight neck .2735 fired cases ,have shot some of the peterson 20 times.You should mic your fired cases,that will tell you if you need to turn necks,you need a couple of thousand's neck tension,possibly even .003,you have to shoot to determine,some barrels .001-.0015 is enough,only way to tell is to shoot
 
I’m actually prepping Peterson .284 right now and the necks are nice and thick but turn down great and you always end up turning off material along 100% of the neck so it’s really consistent. To do so you’ll need a good neck turner since you’re taking more material OR do it in two passes. I’ve turned thousands of Lapua in the past and they’re always a mixed bag for me. Sometimes material is absent from the turning (in the negative if you will), sometimes the neck turns 100%. It’ll eventually fill in with flow on the Lapua but the bottom line is you can feel the quality of the Peterson when you’re handling it. I added a couple pics of my turned Peterson brass.

I just bought 2,000 rounds of the Peterson .284 and I’ve done random testing across all 40 boxes and tolerances are crazy good for wall thickness, runout, pocket depth and weight (that’s all I’ve tested so far) and in most cases it’s better than what I’ve found when measuring an equivalent amount of Lapua. I’ve still evaluating it but so far I’m very happy.

Here’s my test target from yesterday, I was so excited I just loaded some up and ran to the range. These are five shot groups at 100yds (zero prep, just a quick load test for fun), those will tighten up once I actually prep and they break in but you get the idea.

I will also second their great customer service.
 

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No matter the size of the chamber's neck, I always have better results with thinner neck wall thickness brass. Less runout too.
 
I’m actually prepping Peterson .284 right now and the necks are nice and thick but turn down great and you always end up turning off material along 100% of the neck so it’s really consistent. To do so you’ll need a good neck turner since you’re taking more material OR do it in two passes. I’ve turned thousands of Lapua in the past and they’re always a mixed bag for me. Sometimes material is absent from the turning (in the negative if you will), sometimes the neck turns 100%. It’ll eventually fill in with flow on the Lapua but the bottom line is you can feel the quality of the Peterson when you’re handling it. I added a couple pics of my turned Peterson brass.

I just bought 2,000 rounds of the Peterson .284 and I’ve done random testing across all 40 boxes and tolerances are crazy good for wall thickness, runout, pocket depth and weight (that’s all I’ve tested so far) and in most cases it’s better than what I’ve found when measuring an equivalent amount of Lapua. I’ve still evaluating it but so far I’m very happy.

Here’s my test target from yesterday, I was so excited I just loaded some up and ran to the range. These are five shot groups at 100yds (zero prep, just a quick load test for fun), those will tighten up once I actually prep and they break in but you get the idea.

I will also second their great customer service.


When you got your peterson brass and I am assuming you bought bulk in 500 case lots, how were they shipped, in a bag or boxed per 50 cases? Will a dial caliper take a proper reading of the neck thickness? I am not seeing the specs they write about on the Peterson website for case thickness.
 
When you got your peterson brass and I am assuming you bought bulk in 500 case lots, how were they shipped, in a bag or boxed per 50 cases? Will a dial caliper take a proper reading of the neck thickness? I am not seeing the specs they write about on the Peterson website for case thickness.
A ball micrometer or tube mic is the correct tool. You can try a caliper but it's not the correct tool.
 
When you got your peterson brass and I am assuming you bought bulk in 500 case lots, how were they shipped, in a bag or boxed per 50 cases? Will a dial caliper take a proper reading of the neck thickness? I am not seeing the specs they write about on the Peterson website for case thickness.
I bought 2000 from Grafs. Each thousands came in its own factory case of 1000 and each 50 is in its own plastic allowing box.
And yes, ball micrometer works the best.
 
Peterson is my new go-to on brass, at least in the calibers they make it in. It seems to be of great quality and the fact that they come in their own little box is nice touch. One less thing that I have to purchase and pay shipping for in an already expensive hobby.
 

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