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Ackley or Weatherby
Posted by Murphy on Apr 13 2006
Grizz,
Balistically they are the same. Fireforming....technically the case headspaces on the belt..so if fired in either chamber it should just expand into the new void in the chamber. However....the best headspace would certainly be the (corectly made) Ackley improved which will headspace on the shoulder at first firing, that probably won't be the case. Rarely is the barrel set back properly when rechambering to Ackleys. Ken Howell recommends inert filler. ( He must buy Cream-O-Wheat by the bushel)
The up side is the 375 Weatherby is back. Brass and ammo for it is available again. The 375 Weatherby was and is a very good round. It is not in the category of most of the other calibers...hyper-velocity-overbore-fire and smoke and recoil of such things as the 378. It offers a modest 100 fps gain over the 300 grains in the H&H and is simple to do. This one would make the most sense logistically with, brass and ammo available.
For the very best for several small reasons is the 375 JRS. (John R Sundra) It is the 8mm Remington case necked up to 375. Of course this works better when we just buy H&H basic cases and neck down to 375, the 8mm case gets a little thin in the neck up to 375, but necking up does work. This one is the least known but the best ballistically.
I have a beautifully made custom 375JRS with a super piece of Bastogne walnut and a fabulous matte rust blue, made on a pre-64 action. Its 24" tube will launch 300 grain Swift A-frames at 2720fps and the well designed stock and leather wrapped recoil pad make it a joy to shoot. It weighs eight and a half pounds with the 1.5-5x20 Leupold and Talley mounts. It looks good carried muzzle forward over the shoulder when walking the flat pans of western Botswana or checking a water hole in the Kalahari.
A wonderful old, wide Kudu fell to this one from across a wide flat pan. He raised his head above the herd of rustling black Wildebeast on the far side of a crowded waterhole to show off his long, wide and deeply spiraled head gear. After a short wait the Wildebeast and Zebra wandered off and left him standing alone a short distance from his cows and a few Impala ewes at the waters edge. I stood in the midst of a small cluster of Acacia trees in chest high grass. I pushed my day pack into the fork of a short thorn bush and rested the forend on it over my left hand. The ever present Kalahari wind was in my face as he stepped to his right to give me a solid broadside shot and at the same time looked my way as if to say "I'm too far". The thick No. 4 reticle covered the upper one third of his chest and the verticle post aligned with his fore legs. My breath stopped and almost as if on command my heart beat slowed and the trigger broke clean as the rifle steadied in my hands. The herds around erupted in a cloud of dust at the sound of the shot and every animal took flight, all except one. A lone magnificent bull Kudu lay in the Kalahari sand with his feet only inches from his last tracks. He had stood defiantly some 340 long paces from me and made the sacrifce so common to his kind, but with swiftness and without the agony of the lions attack. He became sustenance for the people of a nearby Bushmen village and a celebratory feast for the hunters and my longest shot ever with a 375. A good day and good shootin'.
Murphy
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