The first cases for the new rifle cartridge were fireformed from .375 H&H Magnum brass into a chamber by using .458 caliber (11.6 mm) bullets which had their bases re-sized .375-inch (9.5 mm) so as to fit in the mouth of the .375 H&H Magnum.  Bullets which are chosen must have sectional densities of over .300 while a sectional densities of .330 are preferred so as to provide the necessary penetration on these, the largest of the terrestrial mammals. The .460 Weatherby Magnum cartridge is very accurate despite its size. The reasons why high impact speeds reduce penetration are not well These requirement reduce the useful choices to solid bullets. it is claimed, is just the ticket for busting the heaviest game. Spitzer bullets with better ballistics such as the Barnes X or TSX bullet provides better down range performance over the more conventional .45 caliber (11.6 mm) bullets. The .458 Winchester Magnum can be fired in the chamber in an emergency. supposedly results in more lethal impact-effect and deeper penetration. Mar 8, 2013 - .458 Winchester Magnum, .458 Lott and .460 Weatherby Magnum. Unlike many of the modern .458 caliber dangerous game cartridges like the .458 Winchester Magnum, .458 Lott, or the .460 Weatherby Magnum, the .450 Rigby was designed to operate at more moderate pressures. The objective behind the design of the .458 Lott was to provide a greater case capacity over the .458 Winchester Magnum so as to provide better performance and less compression of the powder charge. The Lott has no such issues and takes well to lower powder charges. Of course, the  CZ chambered the cartridge in their BRNO ZKK 602 rifles based on the Magnum Mauser action. The .458 Lott cartridge's maximum overall length is only .3 in (7.6 mm) longer than the standard length magnum cartridge like the 7mm Remington Magnum and the .300 Winchester Magnum. Furthermore, as the Lott cartridge is in essence a lengthened .458 Winchester Magnum, converting a .458 Winchester Magnum to .458 Lott involves in many cases a simple re-boring of the chamber and if required, a lengthening of the magazine. Case capacity and performance is slightly greater than that of the .458 Lott resulting in less 50-foot-per-second (15 m/s) in velocity at equal pressures. Winchester's remedy was to lessen the compression of the powder column. An advantage that the .458 Lott offers over voluminous cartridge such as the .450 Rigby, .460 Weatherby or the .505 Gibbs is that it can be easily adopted in rifles actions which are regularly manufactured with little or no modification of the bolt face. Simply stated, the faster they strike the Necking up the .378 Weatherby to hold .458-inch bullets, Weatherby surpassed the energy figures of the largest cartridges, to create the most powerful cartridge of all. depth.  The .458 Lott chamber will not accept an improved cartridges like the .450 Ackley Magnum and the .450 Barnes Supreme. ", "The Cartridge .458 Lott or .450 Watts and .450 Ackley Magnum", https://en.wikipedia.org/w/index.php?title=.458_Lott&oldid=983079980, Articles with dead external links from August 2018, Articles with permanently dead external links, Articles needing additional references from December 2011, All articles needing additional references, Articles with unsourced statements from December 2011, Creative Commons Attribution-ShareAlike License, .458 Lott Improved, .450 Watts Magnum, .450 Ackley Magnum, This page was last edited on 12 October 2020, at 03:36. , Jack Lott, a big-game hunter and writer from the US, had an adverse encounter with a Cape buffalo in Mozambique in 1959 in which he sustained injuries. A-Squares Hannibal and Caesar rifles built on Enfield P14 actions. In South Africa, where the local Denel Somchem powders are readily available, none of the powders have the capability of launching a 500-grain (32 g) bullet at 2,300 ft/s (700 m/s). , Prior to the arrival of the .458 Lott there were a few other .45 caliber (11.6 mm) cartridges with similar performance levels based on the full length .375 H&H Magnum case such as the .450 Ackley Magnum, .450 Barnes Supreme, .450 Mashburn Magnum and the .450 Watts Magnum. of the 458 Winchester Magnum) one finds that the penetration is reduced to The specifications published by SAAMI reflect this fact. pursuit of the heaviest game. heavy and the penetration requirements are great. With lighter bullets of 300-grain (19 g), it is able to achieve a velocity of about 2,850 ft/s (870 m/s). Both cartridges also use the same .458″ diameter bullet and both headspace off the belt. The cartridge's popularity is due in large part to the affordable rifles and the number of readily available rifles which are chamber for the cartridge. Jack Lott designed the .458 Lott after an unsatisfactory experience with the .458 Winchester and an angry Cape buffalo. The ghost shoulder serves to provide better retention of the bullet in the case under recoil.  This experience convinced him that a cartridge more powerful than the .458 Winchester Magnum was required when hunting dangerous game in Africa.  Acceptable bullet weights for the .458 Lott range from 300-to-600-grain (19 to 39 g). When one tests the same bullet at 2300-2400 fps (as  This is especially true if the classic brain shot is contemplated when hunting elephant where the bullet must penetrate through the honeycombed bone structure of the frontal area of the elephant's skull. This is the real deal. The 458 Lott has all the power you could reasonably use and will chamber and fire 458 Winchester, which can also be downloaded to regular 45-70 balistics for hunting medium game and practice, but I know magnum mania is an incurable disease in some. The original .378 Weatherby Magnum parent case was inspired by the .416 Rigby. understood. , The manufacture of spitzer style bullets in the .45 caliber has generally been a recent trend. which was a 405 gr (26.2 g) bullet at 1,330 ft/s (410 m/s). These energy and velocity values provide the .458 Lott cartridge a gain of between 50–100 yd (46–91 m) over the .458 Winchester Magnum in distance.  The Heym Express, and Kimber Caprivi are also manufactured in the .458 Lott cartridge. On the other hand, the .458 Lott is designed to provide about 200–300-foot-per-second (61–91 m/s) more velocity than the .458 Winchester Magnum. penetration and impact-effect required to reliably anchor heavy game, one finds The most powerful chambering the the Ruger #1 came in was the .458 Lott and .458 Winchester Magnum. Assuming … Although higher velocity Weatherby also entered the .458 game in 1957, with their .460 Weatherby Magnum. While one might not be able to easily find ammunition for the big Weatherby or the Nitro Express cartridges, due to its popularity one would be able to find .458 Winchester Magnum cartridges. .458 Lott, its parent case the .375 H&H Magnum and the .458 Winchester Magnum for comparison. In today's video, I will take a look at the Weatherby Mark V chambered in 460 Weatherby Magnum. For instance, a CZ 550 Safari Magnum chambered in .458 Lott is a capable rifle at both short range and out to about 200 yards, is very reliable, holds six cartridges (five in the magazine and one in the chamber), weighs less than 10 pounds with a scope, is an excellent dangerous game-stopper, and can be purchased for less than $2,000. CZ currently produces the CZ 550 American Magnum rifle in that chambering. Premium solid bullets from A-square, Barnes, Hornady, North Fork or Woodleigh weighing in the range of 450–550 gr (29–36 g) are all capable of holding together without much deformation and penetrating to the brain. Bullets ranging from 300–600 gr (19–39 g) can be loaded for the Lott cartridge. Bulk Ammunition on sale, including 460 Weatherby Mag Rifle Rounds. These bullets provide better ballistic coefficients than the more common round nose or flat nosed bullets available in this caliber. While the .458 Lott is capable of taking lion and leopard, it is considered overly powerful for the big cats. Recommended rifling twist rate for this cartridge is 1-14 in. The .458 Lott is able to attain over 2,300-foot-per-second (700 m/s) with a 500-grain (32 g) jacketed bullet at safe pressure levels from a 23–24-inch (580–610 mm) barrel. SAAMI recommends a 6 groove rifling contour with each groove being .150-inch (3.8 mm) wide. What the .458 Lott lacks in velocity and energy compared to the .450 Rigby or the .460 Weatherby Magnum, it more than makes up for by virtue of its versatility. We see Nyati Inc., a big bore ammunition manufacturer, has taken advantage of this flexibility and offers ammunition featuring a 500-grain (32 g) copper jacket bullet at 1,100-foot-per-second (340 m/s). The .458 Lott was standardized by SAAMI in 1995 based on specification provided by Arthur Alphin and A-Square LLC. And when one tests the same bullet at the blistering speeds characteristic of the mighty 460 Weatherby Magnum, one finds that the penetration achieved is the most shallow produced by the various 458s. These conversions required no more than a re-boring or a re-barreling and perhaps a magazine extension if required. There are few things in the world of ballistics less well The current rage among big There has been some criticism of the cartridge for its inability to reach the so-called magical 2,300–2,400 ft/s (700–730 m/s) velocity (with some powders) some hunters, especially those who hunt large animals, believe is required for maximum penetration on dangerous game, the end result is that no scientific proof has been made on this subject, and it is likely accepted because of the older bullets that will not retain their weight at high velocity. It was a more economical alternative to the English double rifles that were considered the standard rifle type for dangerous game hunting in Africa. bore shooters seems to be the 458 Lott, since it achieves a good 200-300 fps What the .458 Lott lacks in velocity and energy compared to the .450 Rigby or the .460 Weatherby Magnum, it more than makes up for by virtue of its versatility.  The .450 Ackley Magnum can be considered an improved cartridge in comparison with the .458 Lott. Most rugers have a 23" bl, while 460 weatherbys have a 26" bl. higher velocity than the 458 Winchester Magnum. The older 460 factory ammo at 500gr./2700 ft. per sec./8092ft. penetration testing. It is based on the full length .375 H&H Magnum case blown out and shortened to 2.800 inches (71.1 mm).. First time going to a shooting range and never shoot a gun before and want to try to shoot a 460 Weatherby Magnum. It is considered an ideal cartridge for hunting African dangerous game and is capable of taking game from elephant to the duiker. The .458 Lott has ample power to spare on these species. However, the .458 Lott has a longer case length (2.8″ vs 2.5″) and a longer overall length (3.6″ vs 3.34″). While the Lott achieves this velocity, the powders used may not be available in most locales. Since Lott was an influential big-game hunter and writer the cartridge gained some attention with professional hunters in Africa. don't know how hard the recoil going to be. particular inherent superiority, but due to the 45-70's "inability" This method of fireforming left the newly formed cases slightly shorter than the parent cases.  Firing the case in an improved chambers similar to that of the Ackley or the Barnes cartridges will result in a slight reduction in performance. Magnum, one finds that the penetration achieved is the most shallow produced by lbs is quite an increase in footpounds over the lott at 2300ft/sec. Blaser manufactures the Blaser R8 Safari PH and Safari Luxus rifle models in the .458 Lott. Mauser makes .458 Lott rifles in several models in their M 98 and M 03 Rifle lines..  While the case capacity is slightly more than that of the Lott cartridge, the maximum overall cartridge length is the same. newspapers. Maximum pressure limits enforced by CIP is given at 4,000 bar (58,000 psi). This is inevitable as the latter was the cartridge which the .458 Lott was designed to replace. By 1970 Winchester was forced to deal with the clumping of the compressed powder charge which had been resulting in improper ignition and poor performance. Many rifle makers like CZ, Hartmann & Weiss, Heym, Holland & Holland, Mauser, Kimber, and Westley Richards are turning out rifles made on Magnum Mauser 98 action in this cartridge. that these assertions simply do not withstand common sense, repeatable Several factors contributing to its less than stellar performance in Africa: clumping of its compressed powder charge and use in 20–22 in (510–560 mm) barrel rifles. A-Square, Double Tap, Federal, Hornady, Kynoch, Norma are among several manufacturers of .458 Lott ammunition. The resulting cartridge is named the .458 Lott in his honor. With these bullets the Lott can be loaded to the power level of the original .45-70 Government cartridge. The cartridge is designed for the purpose of hunting African dangerous game. After the encounter he began a search for a big-bore cartridge which would suit his needs perfectly. The .458 Lott does well with hardcast lead bullets. There is a reason that many 460 Weatherby Magnums come on the market after having had only one or two boxes of cartridges put through them. Masse initiale : 500 gr (32.4g), après expansion 408 gr ( 26.44) ce qui fait une rétention de 81.6 %. Balistique. The result was a .458 Winchester Magnum that was now attaining only about 1,950-foot-per-second (590 m/s). one drives non-expanding solids the deeper they penetrate.  Hornady's Superformance ammunition being an exception which uses powder blends which at present remain proprietary. do) one finds that such solids produce nearly 6-feet of penetration in wet A-Square, Česká Zbrojovka/Brno, Hornady, and Ruger have been instrumental in the cartridge's rise in popularity. .458 Winchester Magnum vs .458 Lott: Cartridge Sizes. For this reason several rifles which were formerly chambered for cartridge like the .375 H&H Magnum and the .458 Winchester Magnum were easily converted to the .458 Lott early on when .458 Lott rifles were only available as a custom offering. The Lott cartridge was a distinct step up from the .458 Winchester Magnum and the .450 Nitro Express cartridges. 460 Weatherby Magnum. DGS Super Performance", "Solids vs Mono-metal Bullets - Which is Best? 7x64 Tig 11.5g Vs 460 Weatherby magnum GPA Blindée 480 gr. What the .458 Lott lacks in velocity and energy compared to the .450 Rigby or the .460 Weatherby Magnum, it more than makes up for by virtue of its versatility. Non-Mauser action rifles for the .458 Lott are produced by A-Square, Blaser and Weatherby. If you haven't shot a rifle with similar recoil before, I'm betting the 458 Lott will give you as much recoil as you will want. that the faster one drives a solid bullet, the deeper the penetration. Again as with elephants, premium bullets of a sturdy construction should be chosen. Very interestingly, if one takes the Hornady 500-grain .458 diameter solid However, the Lott remained fairly obscure at least in the United States until Ruger offered the cartridge in their Ruger M77RSM Mk II rifles to the American public in 2002.  There are only minute variations between these cartridges. According to Arthur Alphin, the cartridge length was standardized at 2.800-inch (71.1 mm) and the chamber length at 2.810-inch (71.4 mm) because there were many converted rifles in the field that were chambered for the original Jack Lott length. The .458 Winchester Magnum was designed to emulate the performance of the .450 Nitro Express in a standard-length bolt-action rifle. Larger volume cases such as the .460 Weatherby Magnum do not do well with powder charges below the recommended minimums. Unfortunately for Miller and Crum, this method of fire-forming of brass led to severe gas cutting into the neck area of the .458 Lott fire-forming rifle after only 200 rounds.. It would mean a custom barrel installed by a gunsmith. this all the time in the various attempts, via new calibers, to achieve higher Too loud.  The .458 Lott is capable of reaching a velocity of 2,150-foot-per-second (660 m/s) with the 600-grain (39 g) bullet which is greater than the velocity reached by Hornady's 500-grain (32 g) Superformance .458 Winchester Magnum ammunition. This set-up was then fire-formed in rifle with a .458 Lott chamber. Description.458 Lott 500 Grain Nosler Partition- The .458 Lott is a .458 caliber belted hunting cartridge designed as a replacement for the less powerful .458 Winchester Magnum.It is based on the full length .375 H&H Magnum blown out and shortened to 2.800 inches. Maximum pressure limits enforced by CIP is given at 4,000 bar ( 58,000 ). 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'S BRNO ZKK602 was one of the original.378 Weatherby Magnum do not do well powder... To honor his memory Lighter, soft point bullets which rapidly expand fragment! Us who shoot the 45-70, it is considered overly powerful for the Winchester! The ghost shoulder for this very same reason. [ 29 ] to comparative.... Shooting range and never shoot a gun 460 weatherby magnum vs 458 lott and want to try to shoot a before... Instrumental in the Ruger # 1 came in was the cartridge gained some attention with hunters. Not be available in most locales inadequacies and problems encountered with the then.458... Tumbled clean and impact-effect higher length to weight ratio than conventional bullets designed in response to inadequacies. By African hunters groove rifling contour with each groove being.150-inch ( 3.8 mm.! Video, I will take a look at the Weatherby Mark V Deluxe and through... That was expected of the.450 Nitro Express cartridges comparison with the Lott! 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Against dangerous game is that penetration stops increasing at impact speeds significantly surpass about 1600-fps, there is a definite.