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Lindcott Armory

Rifle · SAAMI

.27 Nosler

Also known as 27 Nosler

Nosler's .277-caliber entry in their proprietary magnum family.

Caliber
0.277″ · 7.036 mm
Introduced
2020
Case
Rebated
Parent
.404 Jeffery
Primary use
Hunting
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains140 · 145 · 150 gr
Identity
Introduced
2020
Type
Rifle
Origin
United States
Inventor
Nosler
Manufacturer
Nosler
Standard
SAAMI
Status
Active
Availability
Specialty
Build
Case capacity
100 gr H₂O
Twist (typical)
1:8.5
Primer
Large Rifle Magnum
Case type
Rebated
Pressure & range
Max pressure
65,000 psi
Eff. range
700 yd
Max range
1500 yd
Recoil
25–35 ft·lb

Introduced by Nosler

Ballistics

Published velocity/energy data isn't available for .27 Nosler. Parent case: .404 Jeffery.

Performance

Best for Withheld until verified
Best for Withheld until verified
Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

SAAMI · verified
Measuremmin✓
Bullet ⌀ 7.040.277 ✓
Neck ⌀ 7.980.314 ✓
Shoulder ⌀ 13.420.528 ✓
Shoulder angle 35°— ✓
Base ⌀ 13.970.550 ✓
Rim ⌀ 13.560.534 ✓
Belt ⌀ n/a
Rim thickness 1.270.050 ~
Neck length 8.330.328 ≈
Case length 65.792.590 ✓
Overall length 84.843.340 ✓

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .27 Nosler is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

Suitable powders

2 reloading powders listed for .27 Nosler, fastest to slowest. Cross-reference in the finder →

Reloader 26Reloader 33
Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Lineage

Immediate parent
.404 Jeffery
Family TreeOpen .27 Nosler in the interactive cartridge family tree

Connected reference

Loads21 factory loads for .27 NoslerReloading2 suitable powders — cross-referenceFirearmsFirearms in .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 traditional .270 Winchester loads. Nosler chambers their Model 21 and Model 48 rifles in .27 Nosler and produces proprietary ammunition. As with all Nosler magnums, the cartridge requires Nosler-branded or custom rifles.

FAQs

What twist rate does .27 Nosler use?
.27 Nosler typically uses a 1:8.5 twist rate.
What bullet diameter is .27 Nosler?
.27 Nosler uses a 0.277″ (7.036 mm) diameter bullet.
Is .27 Nosler still in production?
.27 Nosler is active; typical availability is specialty.
What is .27 Nosler used for?
.27 Nosler is primarily used for hunting.
What is .27 Nosler based on?
.27 Nosler is derived from the .404 Jeffery case.
What are the best powders for .27 Nosler?
Reloading powders commonly listed for .27 Nosler include Reloader 26, Reloader 33.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 21 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →