Comments on: New .204 Ruger, .300 Whisper, & .223 Rem Ammo from Black Hills

By: Jed

Jed — Sat, 25 Feb 2012 14:14:26 +0000

These rounds are for having fun blasting in semi or full auto. CQB, 3 gun,steel challenge games and such where high volume shooting is the norm. (Also some supressed bolt gun apps too.) Who wants to use expensive, hard to find in volume .221 fireball brass ? Who wants to cut .223 brass down and then have to neck turn it too? (we are talking 1,000 rounds at a time) Just seems to me to be a no brainer to pick a .300 Black chambered rifle or upper where you can run .223 brass into a dillon electric carbide form-size-cut off die and load “as is” and run it. I can’t imagine anyone wanting a whisper wildcat when you can run a thoroughbred SAAMI ctg in a high volume application. The whisper was an excellent idea in it’s time. . .new chamber designs like the .300 Black that think outside the box and think about reloaders and making their life easier are clearly a step above IMHO.

By: Eric

Eric — Sat, 25 Feb 2012 03:34:57 +0000

They 300 Whisper and 300 BLK are the same thing one just has been standardized by SAMMI As a matter of fact you can shoot a 300 Whisper in a 300 BLK chamber, even Hornady states this on their website. The Dies are the exact same as well.
http://www.hornady.com/store/300-AAC-Whisper-dieset

By: Steve

Steve — Fri, 24 Feb 2012 21:37:13 +0000

I think I understand you said the .300 Blackout neck is made with simply shortened 233 brass and the forming a neck for .308 bullets leaves the neck the finished neck thickness. What source do you recommend for making and loading the Blackout?

By: Jed

Jed — Fri, 24 Feb 2012 19:54:58 +0000

Pretty sure the .300 Whisper is in it’s death throes since the introduction of the .300 AAC Blackout. J.D. Jones was too greedy and held on to his ctg for too long, stunting its growth. No such bad vices with the .300 black since it’s a bonafide SAAMI ctg now and Remington is cranking out the ammo. The .300 Black chamber has the added advantage of being able to digest .300 whisper ammo in an emergency. The .300 Black was also ingeniously designed to use cut off .223 bulk brass without neck turning the thick mid body .223 brass after it becomes the neck. Bye bye Whisper, The new kid on the block is gonna bury you.

EDITOR: Dead? Well dig a little deeper… The two rounds are very, very similar. Here is a discussion about the possibility/feasibility of shooting .300 Whisper ammo in a .300 AAC Blackout chamber.

http://www.thetruthaboutguns.com/2011/12/foghorn/ask-foghorn-is-it-safe-to-fire-300-whisper-in-a-300-aac-blackout-firearm/

Specs: “The 300 Whisper and 300 Blackout have small differences in their brass dimensions: Blackout is 0.004 larger in the neck, 0.018 longer case length and 0.16 longer OAL. Also the Whisper is a wildcat while the Blackout is SAAMI standardized.”

Since the AAC Blackout is very slightly bigger all around, I think you can figure it out… but of course no one will officially recommend you fire a Whisper in a Blackout chamber. John Hollister of AAC says: “300 AAC Blackout and 300 Whisper ™ are not the exact same thing. It is similar to .223 vs 5.56mm in that the difference is in the neck of the cartridge.”