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American Handgunner May/June 2011 - Page 28
J.D. Jones HANDGUNHUNTING TIPS, TECHNIQUES AND POLITICALINCORRECTNESS WHISPER NOISE AND RECOIL CONTROL A number of years ago I developed and copyrighted the Whisper series of cartridges and related firearms accessories. The concept is easily described. Originally I used the .221 Fireball case opened to .30 caliber. In sub-sonic and silenced mode it’s capable of handling very heavy bullets for its caliber. An example is a 240-grain bullet in .30 caliber with a suppressed sound signature of a pellet gun, or the same bullet at 1,400 fps from a 10" barrel. Around 1,040 fps seems the optimum for sub-sonic ammunitions, and they work in the M-16 family of weapons with a simple barrel change, single shots and a variety of bolt actions. In short, it does all that and is effective with any bullet weight from 100 through 240 grains at some velocity. The 125 Speer and 125 Nosler ballistic tips are not accurate at subsonic velocities but come into their own at around 1,800 fps and retain excellent accuracy up to around 2,800 fps. The “in-between” bullet weights work at in-between velocities. In military guise it’s useful sub-sonic and silenced, as well as at high velocity. In an AR platform with an adjustable gas system (with a 10" barrel) it can generate as much as 2,100 FPS from a 125-grain bullet, which is the equivalent of the 7.62 X 39 AK round. Longer barrels can substantially increase high velocity performance. Effectively Performance Tiny Whispers: The Micro (.30 Luger case) with a 150-grain ball bullet, .30 Mauser Hornady round and the Mini Whisper on the .30 Mauser/Tokarev 7.62x 25 case with a loaded 200-grain Sierra SP. SK has made them since their inception. T/C was the first company licensed to use the Whisper name with the .300 chambered in the Contender. It became very successful in IHMSA competition. Corbon was next and has produced factory ammo for it in sub-sonic and high velocity for years. GAMO is licensed to use Whisper in their line of air rifles. Bill Wilson is licensed to use it on his excellent titanium suppressors and Hornady for their line of ammunition. Other unethical companies have used the name illegally or simply changed the name to 300/221, .300 Fireball or similar 300 BS for their knock offs. In hunting applications I like the 125-grain Nosler ballistic tip for deer better than any other bullet I’ve used. With the 10"-barreled Contender it has given good bullet performance to about 180 yards, which is as far as I’ve used it on deer. On pigs it does quite well, and the 150 NBT work fine at reasonable distances. One agency reported they had taken over 10 thousand pigs with it in sub-sonic and suppressed guise using the Sierra Matchkings. In my wife’s bolt gun in Africa I took nine Kudu cows on a culling operation with nine shots. Distances were between 80 and 120 yards and the 125 Bal-tip at 2,350 was found under the hide on the off side of each animal and all weighed between 90 and 94 grains. I would estimate the weight of these animals at a minimum of 350 pounds and all fell within 10 yards of being hit. s .44 MAgNuM .30! he diminutive size of the original .221 case is ideal for sub-sonic use as it allows the use of fast burning powders with good ignition and burning characteristics. As an example a 220-grain Matchking in a 10" barrel will use about 9-9.5 grains of powder for 1,040 fps and about 19 grains for 1,400 fps. That’s in .44 Magnum territory in energy with much better downrange performance. The relatively small powder charges result in less mass of ejecta, which in turn means less noise, muzzle blast and recoil for the shooter to contend with. T * The original .221 Fireball case is the host to the following Whispers: 6mm (75-gr. HV load), 6mm (105-gr. sub-sonic), 6.5mm (155-grain Matchking sub-sonic), 6.5mm (120 Bal-tip HV), 7mm (140-gr. FMJ), 7mm (175 SP subsonic), 300 with 139-gr. Penetrator HV and with the 240 Matchking. This is my favorite hunting gun in 300 Whisper, a 12" diamond shaped barrel in an old flatside Contender. Light, dynamic handling and all that’s needed for power in a short-range deer/hog gun. 28 WWW.AMERICANHANDGUNNER.COM • MAY/JUNE 2011