.
.
.
$ 3.50 per
Cartridge
.
300 Whisper
("Parent Cartridge")
The 300 Whisper was developed by
J.D. Jones of SSK Industries for the
Thompson/Center Contender Single Shot
Pistol or Rifle.
It was a Proprietary Cartridge as
Cor-Bon use to make it, but due to
brass problems it  is no longer produced
by any manufacturer at this time.
It is 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.
These specimens have a Lake City Head
Stamp
.
Wildcat
300 Whisper
.
$ 6.00
Cartridge in
Labeled Sleeve
.
Cartridge
.
.221 Remington Fireball
.221
Fireball
.221
Fireball
.221
Fireball
.300
Whisper
.300
Whisper
.300 Whisper
Temporary
Out of Stock
,,
.