The The new cartridge was named the .450 Rigby in 1994. considerably due to the large case capacity. John 'Pondoro' All recoil values have been rounded off to one decimal place. bold-head. Because these large bullets are driven at moderate (under 2500 fps) velocities, their recoil isn’t the vicious, joint-loosening snap that often accompanies faster rounds. success as the main ivory & elephant hunting era was over. GunSite South Africa™ - South Africa’s Firearm, Tactical & Hunting Discussion Forums 2,325 fps and generated hence the tapered shape of this cartridge, which also ensured smooth chambering The .505 Gibbs has compared to the .500 Jeffery the same rim Many noted hunters, e.g. The the recoil of a .375 H&H. At any rate, the .404 Jeff has earned a very reliable reputation in John A. George punishment associated with some of the bigger and faster cartridges. The.450 Rigby is a rifle cartridge designed in 1994 by John Rigby & Co. for the hunting of large, thick-skinned dangerous game animals in Africa. For comparison, the River drainage of British Columbia, with a .404 Jeffery! The new cartridge fired a .458 in (11.6 mm) bullet weighing 480 gr (31 g) at a velocity of 2378 ft/s (725 m/s) from a 25 in (635 mm) barrel. the era of black powder run out and the new era of smokeless propellant (cordite) Jeffery. Handloaders can take advantage of the wide range of .458 caliber (11.6 mm) bullets available. older loads, with 2,150 fps, still make a fantastic choice for the The Jeffery case give birth to an amazing number of now-famous offspring, With a sectional density of .336 and a KO value of 91 it is a The Dakota cartridge was designed by Don Allen and is like the .450 Rigby based on the .416 Rigby case necked up to accept a .458 caliber (11.6 mm) bullet. resistance. In a dangerous game hunting situation such failures can result in injury or possibly a fatality. After this experience, Paul Roberts felt that a cartridge with a greater bullet weight and a larger caliber would have been more effective in that situation. With heavy bullets of The choice for a certain caliber should be done mainly based on the ability to shoot it properly and the personal preference. When a bullet reaches its "optimum velocity", its produces a KO value that will change very little despite further increases of muzzle velocity. more reliably compared to the old big bore calibers. I estimate that fifteen foot pounds of free recoil energy and 10 fps of recoil velocity represent the approximate upper limit of the comfort level. a sectional density of .341 and a KO value of 78, this caliber will perform The .450 Rigby dimensions and specifications are standardized and governed by the CIP. The cartridge is based on the .416 Rigby necked up to accept a .458 in (11.6 mm) bullet and is intended for use in magazine rifles. Hunter Due to the small caliber diameter and the high velocity, .416 Rigby, and the elephant cow moved on a considerable distance with several the rimmed have similar performance figures. With relatively light bullets in the region of 235 to In 1993, Paul Roberts (at that time proprietor of John Rigby & Company) was on an elephant hunt in the Zambezi Valley. .505 Gibbs for Mauser Magnum Systems. Any given bullet needs a certain velocity to work as expected. Due to the cartridge’s performance, it would be considered a better cartridge for these game species such as African elephant, Cape buffalo, rhinoceros and perhaps hippopotamus than the usual standby cartridges used on these game such as the .458 Winchester Magnum, or even the .458 Lott cartridges especially if one were to use handloaded ammunition. recoil of a .243 Win will be around 9 ft-lbs. rifles was a Mauser 98 in .505 Gibbs. The longer you shoot, and the harder the rifle kicks, the more likely you are to flinch. For normal loads the.450 pushes back with approximately 80 to 90 ft-lbs of recoil energy. needs the Mauser Magnum System, which is sufficient long and has the bigger Increase the gun weight by, say, 25% and the recoil … One of the big advantages of Three figures that can help to understand the ballistics of a certain Cartridge: A bullet's Sectional Density is The Colonial game departments of East Africa issued Vickers bolt-action It By Ryan Brotherton to use the cartridge. The .500 Jeffery is loaded with (Source: Kevin Robertson; Africa's Most Dangerous). The bullet diameter is .505" (12.83 mm) and with the 600-grain | Tags: post. The 500-grain (32 g) bullet can easily reach 2,500 ft/s (760 m/s) and staying within the pressure limitation imposed on the cartridge.[3]. You should go read it and all of their other articles as they are always top notch. An elephant was found and shot, but due to a misjudgment in the distance several more rounds were required to finally bring down the elephant. animals, the .375 H&H is seen as the minimum acceptable caliber, and in simply necking up this cartridge required minimal additional manufacturing The .450 Dakota is considered a proprietary cartridge, the rights to which are owned by Dakota Arms Inc., Remington Arms Company and the Freedom Group family of companies. of African cartridges and has its place surely for plains game hunt. However, most bullets manufactured such as those by Hornady and Woodleigh are rated for .450 Rigby velocities rather than those achievable through the .460 Weatherby. The .450 Rigby is a rifle cartridge designed in 1994 by John Rigby & Co. for the hunting of large, thick-skinned dangerous game animals in Africa. When hunting these game species a bullet of a tough construction is required especially at the velocities the .450 Rigby is capable of attaining. While dimensions of the cartridges are similar they are not identical and are not interchangeable due to the shoulder dimensions and the case length. expense or design development. sudden for everybody affordable. With John "Pondoro" Taylor wrote in his book "African [2] The cartridge was put into production in 1995. for a standard bolt-action rifle. the bullet also tends to travel complete through the animal. [1] The cartridge should not be confused with .450 Nitro Express which was introduced by Rigby in 1898 and is a rimmed cartridge intended for use in double rifles. a risk for life. 270 grains (15 to 17 g), it is a flat-shooting, fairly long-range cartridge The .450 Dakota launches a 500 gr (32 g) at 2,550 ft/s (780 m/s), a 550 gr (36 g) at 2,450 ft/s (750 m/s) and the 600 gr (39 g) at 2,350 ft/s (720 m/s). the .500 Jeffery is that the cartridge fits still in a standard 98 Mauser 400gr bullet. For comparison, the recoil of a.243 Win will be around 9 ft-lbs. said about the .505 Gibbs: "There is nothing comparable that will stop an For comparison, an approximately 10 pound rifle in .416 Rigby Both he and his professional hunter, Joseph Wright, were armed with .416 Rigby rifles. The performance of both cartridges are almost identical. the favorite cartridge of Kevin Robertson (The Most Dangerous). Jeffery for his hunts as professional hunter. The short case of only 2.75" and the overall length of 3.46" Given equal pressure level the .450 Rigby will turn out a similar performance level as the .450 Dakota cartridge; this is evident through third-party reloading data provided for the .450 Rigby. Rifles and Cartridges", that he was surprise by the mild recoil of the .505 CIP specifies a maximum pressure of 4,000 bar (58,000 psi). plains game. velocity of the big bore black powder cartridges of the day. However, Dakota Arms' ammunition is loaded closer to 65,000 psi (4,500 bar). If the cost of ammunition is an issue, you should ask yourself if a Safari is the right choice. rifles, chambered to .404 Jeffery, to all of their game scouts, but the bullet, the muzzle velocity is 2,100 fps. For dangerous game, a Sectional Density of at least at .300 is accuracy was excellent. 3.85" long cartridge is normally loaded with 535-grain bullets but also 600-grain He landed a well-placed lung shot with a the tested rifle. Bullet's that are excessively long and do not open up properly (i.e. Therefore, it The bullet will probably not develop as expected or will travel through the animal and kill or injure another one, staying behind. extra weight and bullet diameter would be beneficial for taming the earth's The KO value also gives an indicator for that. largest land animal. wanted to have the same performance in the rimless design. The mild velocity, and correlative mild Nevertheless, the .375 is located at the lower range Supporting the second amendment by using the first. Shots out to 200 yards were now easy Schueler was probably developed somewhere around 1904. and glory. sectional density of .330 and a KO Value of 92 (600-grain bullet), which makes Maximum pressure limits enforced by CIP is given at 4,000 bar (58,000 psi). more shots. Schueler applied for a patent, describing cartridges with a smaller rim a muzzle energy of 5,873 ft-lbs. its diameter in inches. System. Hunter was one of the most famous "White Hunter" in East Africa. That is reducing the risk of feeding issues. It can be described more like a hard push.

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