The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby. It has the characteristic double-radius shoulders and is necked down to accommodate the .277in bullets. Being a proprietary cartridge, the .270 Weatherby has no official SAAMI maximum pressure limit. Weatherby factory ammunition is loaded to 71,000 PSI. The first Weatherby cartridge to be used in Africa was the .270 Weatherby on a jackal on June 8, 1948.
| Attributes | Values |
|---|
| rdf:type
| |
| rdfs:label
| |
| rdfs:comment
| - The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby. It has the characteristic double-radius shoulders and is necked down to accommodate the .277in bullets. Being a proprietary cartridge, the .270 Weatherby has no official SAAMI maximum pressure limit. Weatherby factory ammunition is loaded to 71,000 PSI. The first Weatherby cartridge to be used in Africa was the .270 Weatherby on a jackal on June 8, 1948.
- Given its higher pressure and larger case which holds more powder than the .270 Winchester, the .270 Weatherby has about 200 ft/s faster performance with any particular bullet weight. This performance comes at the cost of more recoil and barrel heat. In addition, a long barrel is necessary to take advantage of extra powder to gain maximum velocity. The cartridge is excellent at long-range hunting, but is not well suited to high-volume shooting such as varmint hunting.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .270 Weatherby Magnum |- | colspan="3" style="text-align: center; font-size: 90%; border-bottom: 1px solid #aaa; line-height: 1.25em;" | Image:Munit03.jpg.270 Weatherby 2nd from left |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle / Hunting |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- |- | Specifications mm ) mm ) mm ) mm ) mm ) mm ) mm ) mm ) |- |- |- |- |-
|
| sameAs
| |
| Length
| |
| btype
| |
| dcterms:subject
| |
| dbkwik:publicsafet...iPageUsesTemplate
| |
| dbkwik:vietnam-war...iPageUsesTemplate
| |
| dbkwik:vietnamwar/...iPageUsesTemplate
| |
| dbkwik:world-war-t...iPageUsesTemplate
| |
| dbkwik:worldwartwo...iPageUsesTemplate
| |
| BW
| - 110(xsd:integer)
- 130(xsd:integer)
- 140(xsd:integer)
- 150(xsd:integer)
|
| balsrc
| |
| Origin
| |
| primer
| |
| En
| - 3041(xsd:integer)
- 3217(xsd:integer)
- 3268(xsd:integer)
- 3329(xsd:integer)
|
| Name
| |
| Type
| |
| Caption
| |
| vel
| - 3161(xsd:integer)
- 3242(xsd:integer)
- 3338(xsd:integer)
- 3528(xsd:integer)
|
| case length
| |
| test barrel length
| |
| Base
| |
| Manufacturer
| |
| neck
| |
| case type
| |
| Parent
| |
| rim dia
| |
| rim thick
| |
| rifling
| |
| Bullet
| |
| shoulder
| |
| design date
| |
| Designer
| |
| abstract
| - Given its higher pressure and larger case which holds more powder than the .270 Winchester, the .270 Weatherby has about 200 ft/s faster performance with any particular bullet weight. This performance comes at the cost of more recoil and barrel heat. In addition, a long barrel is necessary to take advantage of extra powder to gain maximum velocity. The cartridge is excellent at long-range hunting, but is not well suited to high-volume shooting such as varmint hunting. For those handloading their own cartridges, this is an easy round to load. It does best with full-power loads and is not well-suited for reduced loads. Ed Weatherby, son of Roy Weatherby says that the .270 Weatherby is his favorite caliber. As he puts it, there just isn't a better long-range deer caliber. He goes on to mention that it is also quite effective for elk, and pronghorn.
- The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby. It has the characteristic double-radius shoulders and is necked down to accommodate the .277in bullets. Being a proprietary cartridge, the .270 Weatherby has no official SAAMI maximum pressure limit. Weatherby factory ammunition is loaded to 71,000 PSI. The first Weatherby cartridge to be used in Africa was the .270 Weatherby on a jackal on June 8, 1948.
- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .270 Weatherby Magnum |- | colspan="3" style="text-align: center; font-size: 90%; border-bottom: 1px solid #aaa; line-height: 1.25em;" | Image:Munit03.jpg.270 Weatherby 2nd from left |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle / Hunting |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | Roy Weatherby |- ! style="padding-right: 1em;" | Designed | colspan="2" | 1943 |- ! style="padding-right: 1em;" | Manufacturer | colspan="2" | Weatherby |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- ! style="padding-right: 1em;" | Parent case | colspan="2" | .300 H&H Magnum |- ! style="padding-right: 1em;" | Case type | colspan="2" | Belted, bottleneck |- ! style="padding-right: 1em;" | Bullet diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Neck diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Shoulder diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Base diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Rim diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Rim thickness | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Case length | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Overall length | colspan="2" | in (mm ) |- |- ! style="padding-right: 1em;" | Rifling twist | colspan="2" | 1-10" |- ! style="padding-right: 1em;" | Primer type | colspan="2" | Large rifle magnum |- |- |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Ballistic performance |- style="text-align: center; font-size: 90%; background: #DEDEDE;" cellspacing="0" cellpadding="0" ! Bullet weight/type ! Velocity ! Energy |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) HP||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) X||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) BT||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) SBT||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" |- | colspan="3" style="text-align: center; padding-top: 5px; font-size: 90%;" | Test barrel length: 26"Source: Accurate Powder |} The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby. It has the characteristic double-radius shoulders and is necked down to accommodate the .277in bullets. Being a proprietary cartridge, the .270 Weatherby has no official SAAMI maximum pressure limit. Weatherby factory ammunition is loaded to 71,000 PSI. The first Weatherby cartridge to be used in Africa was the .270 Weatherby on a jackal on June 8, 1948.
|
![[RDF Data]](/fct/images/sw-rdf-blue.png)