Federal does it again 😅

[fruitnut]

If the steel case idea really works, why not just offer it in all cartridges? The sissy 6.5 Creedmoor would now be a 6.5 PRC. The 7 PRC would be a 7 RUM, etc etc.

I'd be more interested in the 7 BC if it could be loaded up in brass. Then there would be a fallback if the steel doesn't work for reloading.

 

[Sockeye66]

If the steel case idea really works, why not just offer it in all cartridges? The sissy 6.5 Creedmoor would now be a 6.5 PRC. The 7 PRC would be a 7 RUM, etc etc.

I'd be more interested in the 7 BC if it could be loaded up in brass. Then there would be a fallback if the steel doesn't work for reloading.

These are my exact thoughts as well, could be wrong by I believe the .277 Fury ammo has both versions of cases.

 

[comfisherman]

Shhhhh it's supposed to be a secret

That's probably my favorite part.

Whole slew of guys going apoplectic over pressure, meanwhile most wildcats and a goodly portion of innernet' loads are rolling around the low and mid 70s. Have a buddy that pulls up internet claimed fps and loads and backwards figures pressure. The whole "muh shoulder angle and case taper" makes my wildcat efficient crowd is enjoying that low 70s pressure node.

Before the 22 creed was standardized the web was crawling with loads that blew the doors off of bigger bore 22 wildcats I've played with. More than just a few flirting with 80, with premium brass guys were getting several firings still. Have some screen shots of the 22 redline articles with comments of "but muh 22 creedmore can do this"... all with a couple firings on premium brass.

Add in the known successful over pressure setups like the 300 varminter and I'm doubtful well all blow up because of a steel case and 80k.....

 

[fseaman.js]

I wonder if the 7 BC will also come in brass cases at normal pressures? I haven't seen anyone talk about that yet. It would allow one to reload normally and have basically two cartridges in one.

I did a little QuickLOAD work on this because I wanted to see what "upgrading" existing chamberings to "Peak" steel cases would give us. To understand if the models were correct I needed to "validate" to 7 BC with normal pressures.

so

It loses quite a bit of speed. Would it be "worth it" as a case design, IMO yup.

I won't cheer for it. I need to look at the chamber specs to see if there is clearance for brass that has to be sightly thicker.

 

[Calvin45]

That's probably my favorite part.

Whole slew of guys going apoplectic over pressure, meanwhile most wildcats and a goodly portion of innernet' loads are rolling around the low and mid 70s. Have a buddy that pulls up internet claimed fps and loads and backwards figures pressure. The whole "muh shoulder angle and case taper" makes my wildcat efficient crowd is enjoying that low 70s pressure node.

Before the 22 creed was standardized the web was crawling with loads that blew the doors off of bigger bore 22 wildcats I've played with. More than just a few flirting with 80, with premium brass guys were getting several firings still. Have some screen shots of the 22 redline articles with comments of "but muh 22 creedmore can do this"... all with a couple firings on premium brass.

Add in the known successful over pressure setups like the 300 varminter and I'm doubtful well all blow up because of a steel case and 80k.....

This right here is the gospel truth!!!!


The Ackley improved cartridges don't magically make it possible to gain 200-300 fps over unimproved parent cartridges at equal pressures with what amounts to a modest increase in powder volume. But guys have been doing that with them since….well since PO Ackley! .

What they do do very well is hide pressure that would manifest as case stretching….

 

[comfisherman]

This right here is the gospel truth!!!!


What they do do very well is hide pressure that would manifest as case stretching….

Amen and amen....

Wasn't it the guys who made the little 20 cal wild cat with the double radius shoulders who did some definitive science on "case efficiency ". Think it was the 5x35 smc, literal rocket scientist designed it around optimized ignition.... and the "efficiency" was several significant figures out. So real, but hard to justify.


My buddies dad who took me hunting a lot has a 243 Ackley, he's several barrels deep on that action. One winter I was layed up with a broken wing and spent a lot of time loading. He sent me about 400 pieces of brass and a bunch of components to put some ammo together for a spring hunt. His load was just shy of 5 grains over book... called him to tell him. His was "yeah I know, that's why the handle is tig welded on, I carry a rubber mallet with me and try not to shoot it over 60 degrees or direct sun days".... pushed him on why bother with an ai if your just gonna go wild on pressure... "cause the cases don't stretch as much" was the response. Still laugh about that to this day eveytime a whiz bang no taper steep shoulder wildcat comes out... guys been rocking high pressure in brass cases longer than I've been alive.


On a tangent, I've got a baseline understanding of metal. I have a bronze prop, it bends fairly easily when the boat gets driven ray Charles style. Got a stainless prop when we wanted to chase fish in the shallow and have less damage. Downside is they chimed and are a mofo to un sphincter when we curl them up. Insert nibral, witch doctor metal to me. Holds shape like stainless and repairs like bronze... are our cases pure brass? We're they already an alloy? Why was stainless the logical jump?

 

[FlGunner]

Just curious, if they are totally foreign owned, do they still get military ammunition contracts?

Yes they can. The military uses Berger bullets, Lapua, all owned by NAMMO…Norway. NAMMO also produces rocket motors for missiles.