New .284

[svnmag]

IMO: Ammo companies are half a Democrat. They'd be better served by developing "new" loads for existing fodder and offering appropriate bbls for sale.

 

[Tikka280ai]

I get the idea behind this and the 277 fury. High pressure loads for 16-20 inch barrels than hang with if not beat "old" cartridges from 22-26 inch barrels. With how the popularity of supressors has taken off its a growing market.

My only hang up with these is being able to reload these specialty cases without needing a complete diffrent set of equipment

 

[svnmag]

I get the idea behind this and the 277 fury. High pressure loads for 16-20 inch barrels than hang with if not beat "old" cartridges from 22-26 inch barrels. With how the popularity of supressors has taken off its a growing market.

My only hang up with these is being able to reload these specialty cases without needing a complete diffrent set of equipment

Good post. Thanks. I'm an enthusiast and by no means an expert (obvious): Is this rd "saying" steel cases aren't shit anymore and SAAMI needs to "re-evaluate"?

FYI/FUN FACT: A bullet fired from a diving aircraft has enough inherit/relative velocity to overcome stability from twist:

 

[measure-it]

Can't wait for the new 7mmW.GAS. (7millimeter-who-gives-a-sh**)!

 

[PrairieGhost]

Yikes, 20 inch barrel, near 3000 fps with a 175g, and a muzzle brake. That muzzle blast should show up on the Richter scale. It would be a manufacturers dream to create a cartridge extremely difficult to reload. Also a dream for the gun control freaks.
A guy needs a walking gun and a sitting gun. If I had to pick one cartridge right now I would be happy with a 7 PRC in a 22 inch carbon barrel and another in a 28 to 30 inch heavy with 5R fast twist.

 

[Downrigger]

Yikes, 20 inch barrel, near 3000 fps with a 175g, and a muzzle brake. That muzzle blast should show up on the Richter scale. It would be a manufacturers dream to create a cartridge extremely difficult to reload. Also a dream for the gun control freaks.
A guy needs a walking gun and a sitting gun. If I had to pick one cartridge right now I would be happy with a 7 PRC in a 22 inch carbon barrel and another in a 28 to 30 inch heavy with 5R fast twist.

You shooting a 7PRC now? I’m looking at the new seekins trying to make a decision. I’m shooting a weatherby 30-378 with a break and it makes my head hurt from the sound.

 

[PrairieGhost]

You shooting a 7PRC now? I’m looking at the new seekins trying to make a decision. I’m shooting a weatherby 30-378 with a break and it makes my head hurt from the sound.

No I have never had a 7mm, but I may have to cure that. My grandson recently purchased a Seekins in 7 PRC. If all you hunt is deer, elk, moose, black bear, and no large bears I think that cartridge is about a perfect ballance. T h e faster twist in recent years makes every caliber take a step up in game use. Of course the 7mm in any cartridge has never been a slouch. Also for the past two years the Seekins has been my dream rifle. If you watch Backfire on utube he reports trouble with 7 PRC accuracy until he tried it in a Seekins.

 

[SDMF]

IMO: Ammo companies are half a Democrat. They'd be better served by developing "new" loads for existing fodder and offering appropriate bbls for sale.

Give or take, once you go over 55K PSI in any brass case, your primer pockets have a "lifespan".

You can keep the neck and shoulder "alive" almost indefinitely by proper sizing and timely annealing, but, get up into the low-mid 60K PSI range and primer pockets don't last forever. Some last longer than others, but, they all eventually fail to crush-fit a primer.

80K PSI is up in the range where in a brass case you pierce the primer, flame-cut nice little "pits" into your bolt face, and get a face-full of escaping gases. And/or the primer-pocket fails completely and when you open the bolt (if you can) the case comes out and the primer falls down into the magazine or trigger mechanism.

It's hard to say, but, it might make more sense to people if we got rid of "caliber headstamps" like 308Win and instead called out cases by their projectile diameter, case length, case capacity, and PSI ratings. If you've got a bore diameter, case capacity, and max PSI it becomes more difficult to be enamored with a "head stamp" as something magical.

The 308 x 51 x 56 x 62,000 doesn't exactly roll off the tongue like "308 Win" or "7.62 NATO" though.

It'll be interesting to see as more steel case offerings and reloading tools become available how the manufacturers go about dealing with the steel portion of the cases. Previous to the .277Fury or this new 7 BackCountry, the way to deal w/steel cases was to lacquer the cases and chrome line chambers and bores. Currently it looks like nickel-plating at least the steel portions of the case is how they get around "stickage". At bottleneck cartridge pressures, nickel eventually flakes off though. When that happens you run the risk of galling dies, or worse, chambers, bolt-lugs and/or bolt race-ways.

I'll admit, that a modest 22" bbl with what most consider a fairly "short" 6" suppressor, isn't nearly as "handy" as a straight 22" overall bbl length.