Nosler's .277-caliber entry in their proprietary magnum family. Pushes 150-grain .277 bullets to 3,125 fps — significantly faster than .270 Winchester and .270 WSM — making it a flat-shooting, hard-hitting elk cartridge.
Type: Rifle
Introduced: 2020, United States
Parent case: .404 Jeffery
Standardization: SAAMI
Bullet diameter: 0.277" (7.04 mm)
Case length: 2.59" (65.79 mm)
Overall length: 3.34" (84.84 mm)
Max pressure: 65,000 PSI
Rim type: Rebated
Primer: Large Rifle Magnum
Typical twist rate: 1:8.5
Muzzle velocity: 3100–3300 fps
Muzzle energy: 3200–3984 ft-lbs
Effective range: 600 yd
Common bullet weights: 150, 165 gr
Primary use: Hunting
Production status: Active
Also known as: 27 Nosler
History: Introduced in 2020 as the sixth member of Nosler's rebated-rim magnum family (.26, .27, .28, .30, .33 Nosler). The .27 Nosler targets hunters who want .277-caliber bullet performance at maximum velocity — filling the gap between .270 Winchester and the larger .28 Nosler. The 6.8 Western's 2021 introduction created direct competition; both cartridges use .277 bullets with higher BCs than…
Notable firearms: Nosler Model 21, Nosler Model 48
Similar cartridges: .270 Weatherby Magnum, 6.8 Western, .28 Nosler