Nas3 308 Brass

wvfarrier

Ignorant wretch
Full Member
Minuteman
Dec 7, 2012
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West (By GOD) Virginia
I received a batch of the Shellshock 308 Win casings. The company has zero communication skills. I left several messages via email/phone and received no responses. I also received zero shipping info but the brass did arrive after 6 days so not bad but the lack of communication annoyed me.

The brass itself looks terrible. Its filthy unlike the photos they provide on their website where it all looks new. What I received looks like 5 week old nickel range brass. Pretty ugly.

I threw some of it in the stainless media to clean it up. We will see how it turns out. The annealing marks are almost 3/4 of the way down the case length....kinda weird. The 300blk casing I bought previously looked MUCH better.

My only guess is that they coat them in some kinda of oil during packaging. The bag is covered in it.

The interesting part is the H2O capacity. My alpha (unfired) srp brass holds 54.8 grains of water BUT the SS Nas3 holds 57!!! That is a massive difference.

My plan is too load some up tomorrow with my current 308 recipe and see how it goes.
20250823_140417.jpg

20250823_140432.jpg
 
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I received a batch of the Shellshock 308 Win casings. The company has zero communication skills. I left several messages via email/phone and received no responses. I also received zero shipping info but the brass did arrive after 6 days so not bad but the lack of communication annoyed me.

The brass itself looks terrible. Its filthy unlike the photos they provide on their website where it all looks new. What I received looks like 5 week old nickel range brass. Pretty ugly.

I threw some of it in the stainless media to clean it up. We will see how it turns out. The annealing marks are almost 3/4 of the way down the case length....kinda weird. The 300blk casing I bought previously looked MUCH better.

My only guess is that they coat them in some kinda of oil during packaging. The bag is covered in it.

The interesting part is the H2O capacity. My alpha (unfired) srp brass holds 54.8 grains of water BUT the SS Nas3 holds 57!!! That is a massive difference.

My plan is too load some up tomorrow with my current 308 recipe and see how it goes.
20250823_140417.jpg

20250823_140432.jpg
Similarly, my Sig 277 Hybrid case's volumes measured at 57 grs H2O. I'd received 4 different case headstamps of them and each was a little different. After necking them up from .277 to .308 and firing them, two of the headstamps measured at 57.7, which interestingly is exactly what my Winchester .308 brass measured.

You're idea of trying your normal load first is a good one, if nothing more than to get some fire formed and then get a measurement of their case volumes. Then you can test some different loads, which is what I did, starting with normal loads and working up with different powders for more velocity . . . assuming that's what you got these cases for.

I worked up a load max pressure (that being at 80k psi, much higher than I intend to use normally) using 46.5 grs H-4895 pushing 177 SMK's with a COAL of 2.977" to 2,900 fps. . .something I would not recommend anyone doing unless they really know what they're doing. Modern day actions and barrels can handle that pressure, but it still hard on them. I intend to keep pressure somewhere between 70k and 75k psi with these cases. I've not had any extraction or ejection issues with these cases so far.

I've very curious as to how these case's of your compare. :rolleyes: :unsure:


Hyprid cases with 4064.jpg
6.8x51 Hybrid cases finished proessing to .308.jpg
 
following this thread
Same here .. but
'asking' if anyone here doing the Nas3 300bo brass in a Boltaction loading high Vel, only ( NOT subsonic ) ?
Or is there a Thread already done about subject here already on the SHcom ?

Pretty interested if this Brass make a worthwhile advantage for 110 Vmax's over just standard brass out the bolt gun .
.
 
Interested.

Been thinking of a .308 Winchester +P+ round for my present short action bolt gun.

Yes, stupid, I know.
 
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Same here .. but
'asking' if anyone here doing the Nas3 300bo brass in a Boltaction loading high Vel, only ( NOT subsonic ) ?
Or is there a Thread already done about subject here already on the SHcom ?

Pretty interested if this Brass make a worthwhile advantage for 110 Vmax's over just standard brass out the bolt gun .
.

I've got some 300BO supersonic 155gr + NAS3 case info near the bottom of the post linked below. It's an 8" AR, but still gives you some idea of what it can do.
Since that post I did load some 110 Vmax & Lapua 100gr HPCE with the Nas3 cases using N110
8" barrel AR
Factory Hornady Black 110Vmax is really slow at 1419fps
NAS3 110Vmax @ 2.091coal worked up to 18.4gr N110 & Ten shots avg 2144fps SD 6.7
NAS3 100gr Lapua HPCE @2.034coal, N110 18.8gr (C) = 2242fps Sd 4.7 over 10 shots
 
Same here .. but
'asking' if anyone here doing the Nas3 300bo brass in a Boltaction loading high Vel, only ( NOT subsonic ) ?
Or is there a Thread already done about subject here already on the SHcom ?

Pretty interested if this Brass make a worthwhile advantage for 110 Vmax's over just standard brass out the bolt gun .
.
I used some to load the barnes 130 ttsx to 2460fps from a 16" 300blk