Shell Shock Technologies Cases-308

[SippyCup]

Interesting stuff. Thanks for sharing.

 

[mollerdan]

I wonder how these compare with the new Federal “Plus Peak” steel cases? I hear some companies plan on making dies for their cases

 

[sdupontjr]

One way around the Varget crunch is try 8208xbr. I was able to get a good bit more velo out of my 20" CTR with it compared to Varget without the crunch. As mentioned, H4895 also.

 

[Kjc103]

I wonder how these compare with the new Federal “Plus Peak” steel cases? I hear some companies plan on making dies for their cases

Probably about the same. They operate on the same premise.

Whoever figures out the reloading part of this is going to get my business.

Right now I’m using Alpha brass in various calibers at around 72k psi, multiple reloading, no issues.. The steel cases work better. With the Alpha cases you get that sharp, snappy recoil of an over pressure case. The steel cases don’t do that at all. Even at 80k psi. In fact, the recoil feels essentially the same even though you’re 300fps faster. Alpha also doesn’t give you that extra 10 percent volume.

But, I can reload the Alpha cases. They’re also available in a lot of calibers. 6 BR specifically which I shoot the most of.

 

[Kjc103]

Just received my order for the brass. Did you just use the mandrel to evenly size the necks? If so did you just add sizing lube inside the neck and run the mandrel through it?

I loaded up a 10 round ladder from 44.5 gr to 49 gr of varget to pressure test. Seating the bullets felt a little crunchy, wondering if sizing the necks would help. Also, did you chamfer and deburr? I felt like these cases didn't chamfer and deburr as nicely as normal brass does.

I literally just ran the case dry into the mandrel.

No chamfering or deburring.

Worked out fine.

 

[Andouille]

Probably about the same. They operate on the same premise.

Not completely true. Shell Shocl Technologies states that NAS3 are not intended for higher pressure loading, rather they achieve higher velocities through increased powder capacity (~11% for 308). That means reloading at higher pressures is at your own risk.
From their website:

Increased Internal Volume and Ballistic Efficiency​

One of the most meaningful engineering advantages of NAS³ cases is their increased internal case volume compared to traditional brass. This optimized geometry allows for more efficient energy utilization when the powder is ignited.

When properly loaded within SAAMI pressure limits, NAS³ ammunition can achieve higher velocities than comparable brass-cased ammunition at standard SAAMI pressures. While NAS³ cases are engineered to withstand demanding operating conditions, they are not intended to be loaded beyond SAAMI specifications. Over-pressurizing any cartridge case can result in firearm damage or personal injury.