Black Hills - another source of 300 BLK ammo

AR/M4 Beyond 5.56/.223
1

http://blackhillsammo.wordpress.com/2012/02/06/black-hills-300-whisper-now-available/#comments

They say it is 300 BLK compatible.

2

So is this like the whole .223/5.56 thing or like the .38/.357?

Compatible…

3

Robert,
your ammo for the 300blk is designed for that round, is Black Hills designed for the 300whisper/blk or is it simply .another 7.62 stuck in the whisper case ?

4

I am told 300 Whisper(R) chambers have tighter necks and shorter throats - but the drawing is a trade secret, and so no one seems to really know. If so, the best analogy is comparing 6.8 SPC-II (300 BLK) to 6.8 SAAMI (300 Whisper).

300 BLK is an open standard with about 85 companies making products so far - and the drawing is here:

http://www.saami.org/PubResources/CC_Drawings/Rifle/300%20AAC%20Blackout.pdf

5

The bullet Black Hills is using is the Sierra 125 MK 300 AAC Blackout bullet.

6

Good to see another big name making ammunition.

7

Is there a difference in the external case dimensions of the Remington 300 Blackout ammunition and that of the 300 Whisper ammunition manufactured by Black Hills and Hornady?

8

Good to see another big name making ammunition.

9

I don’t know what cases Black Hills is using. Hornady makes their cases to 300 AAC Blackout specs and it is compatible with 300 BLK chambers.