![]() When both the cartridges are housed in a properly tuned rifle, there is no issue with feeding or extraction, but I've seen more than one instance where the rebated rim of the. I find the Jeffery case delivers a sharper, faster recoil than the Gibbs (attributed to a higher pressure), though the Gibbs will definitely grab your attention. 500 Jeffery shares the same bullet diameter as the. Factory ammunition is available for both from Norma and Nosler, and there is good component brass and bullets for both as well (the. Which is the better choice? It’s a tough call. But if you can ride the lightning, you have a serious piece of gear in your hands. Having loaded for and shot several rifles chambered for these two brutes, I can tell you that the recoil of both is a serious factor, and neither of these cartridges are a wise choice for the recoil sensitive. Fletcher Jamison had one of the few Jeffery’s rifles chambered for this big cartridge-the rifle is now in the wonderful collection of Bill Jones-and took elephants numbering into the hundreds with it before his untimely death, and many African professional hunters rely on the. 500 Jeffery certainly has the capacity for a considerable amount of powder, though it does run at a higher pressure than the Gibbs does. of energy, and at the time of its release it was the most powerful hunting cartridge available (the. 510-inch diameter 535-grain bullet at 2400 fps for 6,800 ft.-lbs. 500 Jeffery was designed to fit easily in a standard 98 Mauser action. Using a 2.75-inch case with a rebated rim (.575-inch diameter), the. Jeffery picked up the cartridge, but because the Great War had ended just over a year prior and the Germans weren’t exactly revered in Great Britain, they added the Jeffery name to it. 500 Jeffery came to light around 1920, by all accounts, but came from Germany, where it was known as the 12.7x70mm Schuler, or the. 505 Gibbs was the cartridge of choice of Robert Wilson, in Hemingway’s The Short Happy Life of Francis Macomber “I’ve this damned cannon…” is a quote that stuck with me since I first laid eyes on it. If you’re a fan of African literature, you may recall that the. It is a rimless design, with a shoulder angle of 35-degrees 35-minutes, which allows for good headspacing. 505 Gibbs works well in a magnum Mauser receiver. Using a case length of 3.150 inches and a cartridge overall length of 3.850 inches (the same as the. 505 Gibbs earned a reputation as an excellent choice for all of the dangerous big-game species in both India and Africa. With this kind of bullet weight and energy, the. 505 Gibbs runs at a lower pressure than does many other cartridges of this class, with CIP recommending a maximum pressure of 39,000 psi. With a case capacity of 178 grains of water, the. 505 Gibbs was introduced in 1910 by George Gibbs, using a 525-grain of nominal diameter, at an advertised muzzle velocity of 2300 fps for over 6,100 ft.-lbs. Let’s compare and contrast the Gibbs and the Jeffery. If the brute force of the butt-end of the rifle doesn’t bother you, and you feel that your hunting will warrant owning a rifle in this class, the differences between these two can be important. There is something special about a rifle with a bore so large you can stick your finger in it, using a case the size of a MiniMag flashlight: it means business. Both are popular choices among Africa’s professional hunters who routinely deal with elephant, Cape buffalo and hippo, as well as those clients who hire them. Both will certainly stop a charge better than any lesser cartridge, and both have been known to split rifle stocks. 500s represent what may be just about the top end of tolerable recoil for mortal humans, especially in a rifle which doesn’t require a caisson.īoth cartridges are nearly as rough on the shooter as they are on the game animal, and it requires diligent practice and dedication to shoot these big cartridges accurately. While there are larger choices for bolt guns-the. 505 Gibbs are among the most popular choices, and with good reason. 500 Nitro Express is the darling of the double rifle fans, but among those who prefer a bolt-action repeating rifle, the. I have no plans to put a muzzle break on mine, but I would like to see the difference.Ġ registered and 11 anonymous users are browsing this forum.When I think about serious stopping rifles and cartridges-the kind that will put a dangerous game animal down and put it down fast-the bore diameter usually starts with ‘five.’ The. I've seen the YouTube of the 600 OK with and without brake and there's no way I would shoot one without one.Ĭould you share these links, I don't think I have seen one without a muzzle break. The only problem is that this rifle will be iron sights only, so a bit harder to cut down once it's built. ![]() Personally I would start with a 26 inch bbl. Shooting & Reloading - Mausers, Big Bores and others
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