.
.
U.S.A. and
some other
countries
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300 Whisper
The 300 Whisper was developed as a wildcat cartridge by J.D. Jones of SSK Industries
for the Thompson/Center Contender single shot pistol or rifle.
It was made by necking out the .221 Remington Fireball from .22 caliber to .300 caliber,
which also reduces the case neck angle from 29 degrees to 23 degrees.
It was later produced by the Cor-Bon Company, and now
(2013) by the Hornady
Company for the AR-15 platform for tactical entry operations by military & police.
Pictured at left and for
sale is 300 Whisper by
Hornady, with proper
300 Whisper Head Stamp.
208 grain, "AMAX"
projectile
"SUBSONIC"
only 1,000 Feet per Sec.
~~~~~~~~~~~~~~~~~~~~~~~~~
pictured on right:
300 Whisper vs .221 Fireball
.
$ 2.99 per
Cartridge
.
Cartridges in current production by the larger
ammunition makers: CCI, COR-BON, Federal, Hornady, Norma, PMC,
Remington, Winchester, Weatherby, Wolf, etc...
U.S.A. and
some other
countries
Current
Rifle Cartridges
300
Whisper
.221
Fireball
.