.28 Nosler
| 28 Nosler | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
26 Nosler, 28 Nosler, and 30 Nosler | ||||||||||||
| Type | Rifle | |||||||||||
| Place of origin | United States | |||||||||||
| Production history | ||||||||||||
| Designer | Nosler | |||||||||||
| Designed | 2015 | |||||||||||
| Specifications | ||||||||||||
| Parent case | .404 Jeffery | |||||||||||
| Case type | Rebated rim, bottlenecked | |||||||||||
| Bullet diameter | .2840in | |||||||||||
| Rim diameter | .543in (13.6mm) | |||||||||||
| Overall length | 3.340in (84.8mm) | |||||||||||
| Case capacity | 93.8 gr H2O | |||||||||||
| Rifling twist | 1 in 9 inches | |||||||||||
| Primer type | Large rifle magnum | |||||||||||
| Maximum pressure (SAAMI) | 65,000 psi (450 MPa) | |||||||||||
| Ballistic performance | ||||||||||||
| ||||||||||||
The 28 Nosler is a 7mm (.284”) caliber, rebated-rim centerfire rifle cartridge designed by Nosler. Introduced in 2015 [1] and approved by SAAMI on January 19, 2015. The 28 Nosler is based on the 26 Nosler which was released in 2014. The 28 Nosler shares the same overall cartridge length (3.340”) as the 26 Nosler which allows it to be chambered in standard-length action.[2] This feature helps weight-conscious sportsmen to lighten their load before venturing into the backcountry. The cases’ overall length also aid in quick follow-up shots, since the bolt throw is shorter than on a magnum action.[3]
The name 28 Nosler refers to the first two digits in the caliber (0.284”) of the bullets that the cartridge fires and the name of the company which created it.
The .28 Nosler is a shortened version of the 7mm Remington Ultra Magnum. They share a maximum body diameter of 0.550 inch. Rebating the rim to 0.534 inch simplifies the production of rifle bolts since the rims of Holland & Holland-style belted magnums, such as the 7mm Remington and .300 Winchester, are the same diameter. Whereas the 7mm RUM case measures 2.387 inches long from head to body-shoulder juncture, that dimension on the .28 Nosler case is 2.166 inches. The dimension at that point on the Nosler case is 0.002 inch larger and that reduces its body taper by just a tad. Maximum case lengths are 2.850 and 2.590 inches respectively. Shoulder angles are 30 degrees for the Remington cartridge and a slightly sharper 35 degrees for the Nosler. Due to its greater length, the Remington case is about 25 percent more capacious than the Nosler.[4]
Since the .28 Nosler burns smaller powder charges than the 7mm RUM, barrel accuracy life is potentially a bit longer. How much longer depends on a number of things, including barrel quality and whether a barrel is pampered or abused by its owner.
The 28 Nosler cartridge case can be formed by “necking-up” or expanding the neck of a 26 Nosler case to 7mm (.284”) diameter. The cartridge case for both the 26 and 28 Nosler is based on the 404 Jeffrey case.
In January 2016, Nosler released a 30 caliber (0.308") version of this cartridge called the .30 Nosler and in October of the same year, released a 33 caliber (0.338") version called the .33 Nolser.
References
- ↑ "Nosler Unveils World's Most Powerful 7Mm Commercial Cartridge". Nosler. Archived from the original on 2015-03-25. Retrieved 28 January 2015.
- ↑ "28 Nosler". American Hunter. Retrieved 29 January 2015.
- ↑ "Pushing the Limits with the 28 Nosler". Gun Digest. Retrieved 26 February 2015.
- ↑ Simpson, Layne. "The New 28 Nosler". Ammo Review. Shooting Times. Retrieved 14 June 2016.