What twist rate does .25 Creedmoor use?

.25 Creedmoor typically uses a 1:8 twist rate.

What bullet diameter is .25 Creedmoor?

.25 Creedmoor uses a 0.2571″ (6.53 mm) diameter bullet.

Is .25 Creedmoor still in production?

.25 Creedmoor is active; typical availability is limited.

What is .25 Creedmoor used for?

.25 Creedmoor is primarily used for hunting, target.

What is .25 Creedmoor based on?

.25 Creedmoor is derived from the 6.5 Creedmoor case.

Lindcott Armory

Rifle · Wildcat

.25 Creedmoor

Also known as 25 Creedmoor · .25 CM · 6.5 Creedmoor necked to .25

The 6.5 Creedmoor case necked to .257 — running lighter, higher-BC .25 caliber bullets at higher velocities than the parent.

Caliber: 0.2571″ · 6.53 mm
Introduced: 2016
Case: Rimless
Parent: 6.5 Creedmoor
Primary use: hunting, target
Status: Active

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VelocityBeing verified

EnergyBeing verified

Typical grains100 · 110 · 115 gr

Identity

Introduced: 2016
Type: Rifle
Origin: United States
Inventor: Hornady
Manufacturer: Hornady
Standard: Wildcat
Status: Active
Availability: Limited

Build

Case capacity: 52.5 gr H₂O
Twist (typical): 1:8
Primer: Small Rifle
Case type: Rimless

Pressure & range

Max pressure: 62,000 psi
Eff. range: 600 yd
Recoil: 9–13 ft·lb

Introduced by Hornady

Ballistics

Published velocity/energy data isn't available for .25 Creedmoor. Parent case: 6.5 Creedmoor.

Performance

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

Measure	mm	in	✓
Bullet ⌀	6.53	0.257	✓
Neck ⌀	7.32	0.288	✓
Shoulder ⌀	11.73	0.462	✓
Shoulder angle	30°	—	✓
Base ⌀	11.95	0.470	✓
Rim ⌀	11.99	0.472	✓
Belt ⌀	n/a
Rim thickness	1.37	0.054	✓
Neck length	7.09	0.279	≈
Case length	48.77	1.920	✓
Overall length	71.76	2.825	✓

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. .25 Creedmoor is highlighted below.

Factory loads

Verification

Being verified

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

Reloading costestimate cost per round vs factory

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

Powder $/lb Charge (gr) Bullet $/ea Primer $/ea Brass reuses Brass $/ea

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

Lineage

Family TreeOpen .25 Creedmoor in the interactive cartridge family tree

Connected reference

Loads20 factory loads for .25 Creedmoor FirearmsFirearms in .25 Creedmoor

History

First developed by individual shooters around 2015–2016, the .25 Creedmoor gained rapid traction as hunters recognized the combination of 6.5 Creedmoor brass availability with high-BC .257 bullets like the 131-grain Berger Hybrid. Several custom barrel makers began chambering rifles in 2017–2018, and Hornady published load data by 2019. SAAMI standardization remains possible.

FAQs

What twist rate does .25 Creedmoor use?: .25 Creedmoor typically uses a 1:8 twist rate.
What bullet diameter is .25 Creedmoor?: .25 Creedmoor uses a 0.2571″ (6.53 mm) diameter bullet.
Is .25 Creedmoor still in production?: .25 Creedmoor is active; typical availability is limited.
What is .25 Creedmoor used for?: .25 Creedmoor is primarily used for hunting, target.
What is .25 Creedmoor based on?: .25 Creedmoor is derived from the 6.5 Creedmoor case.

Sources & provenance

Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 20 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →