From Surf Wiki (app.surf) — the open knowledge base

.416 Weatherby Magnum

Rifle cartridge

Field	Value
name	.416 Weatherby Magnum
origin	South Gate CA USA
type	Rifle/Dangerous Game
designer	Weatherby
design_date	1989
manufacturer	Weatherby
production_date	1989–present
parent	[.378 Weatherby Magnum](378-weatherby-magnum)
case_type	Belted, bottleneck
bullet	.416
neck	.444
shoulder	.561
base	.582
rim_dia	.579
rim_thick	.252
case_length	2.913
length	3.750
case_capacity	140
rifling	1 in 14 in
primer	Large rifle (magnum)
max_pressure	65000
bw1	350
btype1	X
vel1	2880
en1	6448
bw2	400
btype2	RN
vel2	2700
en2	6474
test_barrel_length	26"
balsrc	Weatherby ballistics page

The .416 Weatherby Magnum is a belted, bottlenecked cartridge designed by Ed Weatherby and launched commercially in 1989. It is a dangerous-game cartridge intended for the hunting of heavy dangerous game such as elephant and African Cape buffalo. It is considered the most powerful commercial .416 cartridge, besting the Remington, Rigby and Ruger .416s by a velocity of 300 ft/s. Unlike earlier Weatherby cartridges which were designed by Roy Weatherby, this cartridge was designed by his son Ed Weatherby.

Beginning in the 1960s and through the 1970s, safari hunting in Africa was on the decline, and in turn demand for big-bore cartridges waned. Furthermore, the introduction of the .458 Winchester Magnum, which could be chambered in inexpensive rifles, further put a nail in the coffin of other big-bore cartridges such as the .416 Rigby, which required an oversized rifle action. Due to the lack of interest, ammunition manufacturers like Kynoch ceased operations.

However, by the 1980s, a renewed interest in safari hunting created a demand for big-bore dangerous-game cartridges. In 1988 Remington stepped up to the plate with their iteration of the .416 Hoffman, which was given the name .416 Remington Magnum. Unlike the Rigby, the Remington cartridge utilized the .375 H&H Magnum case and therefore, unlike the .416 Rigby, could be chambered in most firearm actions.

Taking advantage of this momentum, Weatherby introduced their own .416 cartridge in 1989; it was based on the .378 Weatherby Magnum cartridge, which was necked up to accept a .416 in bullet.

Design

In traditional Weatherby fashion, a Weatherby cartridge would outclass similar-caliber cartridges with regard to the performance of the cartridge. To accomplish this task Weatherby relied on one of the largest commercial sporting cartridge cases available. The .416 Weatherby Magnum uses the same case as the .378 Weatherby Magnum and the .460 Weatherby Magnum. The case design was inspired by the .416 Rigby cartridge and features a belt and Weatherby's signature double-radius venturi shoulder. Unlike the .416 Ruger and the .416 Remington, the .416 Weatherby Magnum requires an extra-large bolt face and large magnum action to contain the cartridge due to its oversized dimensions. Putting this in perspective, the .416 Weatherby Magnum has a case capacity of 140 gr. of water (9.09 cm3), an increase of 31% over that of the .416 Remington Magnum case.

The .416 Weatherby Magnum has been standardized by both the CIP and SAAMI. SAAMI recommends a 6-grooved barrel with a bore Ø of .408 in and a groove Ø of .416 in with a twist rate of one revolution in 14 in. Weatherby's pressure rating is 65000 psi; however; Weatherby's own factory ammunition is loaded to lower pressure levels than this maximum. As with other Weatherby cartridges, there are discrepancies between SAAMI and CIP dimensions. This is arises from the CIP's treatment of the double-venturi case, shoulder and neck area of the cartridge. the CIP attempts to treat the shoulder as a conventional shoulder with transitional radius between each of the segments.

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

pistol-and-rifle-cartridges magnum-rifle-cartridges weatherby-magnum-rifle-cartridges

Want to explore this topic further?

Ask Mako anything about .416 Weatherby Magnum — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report