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Lindcott Armory Lindcott Armory
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Rifle · SAAMI

6mm Creedmoor

Also known as 6mm CM · 6x48mm

Precision rifle competition cartridge.

Caliber
0.2433″ · 6.18 mm
Introduced
2017
Case
Rimless
Parent
6.5 Creedmoor
Primary use
Competition, Target, Hunting
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains100 · 105 · 108 gr
Identity
Introduced
2017
Type
Rifle
Origin
United States
Inventor
Hornady / GAP
Manufacturer
Hornady
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
52 gr H₂O
Twist (typical)
1:7.5 to 1:8
Primer
Large Rifle or Small Rifle (SRP/LRP brass both exist)
Case type
Rimless
Pressure & range
Max pressure
62,000 psi, SAAMI transducer
Eff. range
1200 yd
Max range
5750 yd
Recoil
6.5–10 ft·lb

Introduced by Hornady

Ballistics

Published velocity/energy data isn't available for 6mm Creedmoor. Parent case: 6.5 Creedmoor.

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.

CIP TDCC · verified
Measuremmin✓
Bullet ⌀ 6.180.243 ✓
Neck ⌀ 7.010.276 ✓
Shoulder ⌀ 11.740.462 ✓
Shoulder angle 30°— ✓
Base ⌀ 11.960.471 ✓
Rim ⌀ 11.990.472 ✓
Belt ⌀ n/a
Rim thickness 1.370.054 ✓
Neck length 6.830.269 ≈
Case length 48.771.920 ✓
Overall length 71.122.800 ✓

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. 6mm Creedmoor is highlighted below.

Factory loads

Verification

Being verified

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

Suitable powders

20 reloading powders listed for 6mm Creedmoor, fastest to slowest. Cross-reference in the finder →

BenchmarkAR 2207AR 2208IMR 30312460N135N550H380N555Vihtavuori N140VargetLT-32StaBALL MatchN540AR 2209Reloader 17N560Vihtavuori N150Vihtavuori N160N565
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.

Firearms chambered in 6mm Creedmoor

SIG Sauer Cross PRSHowa Carbon Elevate 6mm CreedmoorBrowning X-Bolt Max Long Range 6mm Creedmoor LHHowa Alpine MDT ESS 6mm CreedmoorSpringfield Armory Springfield Armory Model 2020 Waypoint 6.5 Creedmoor 24-inchHowa Alpine MDT ESS 300 Win MagBergara Premier Ridgeback 308 WinMasterPiece Arms BA Comp MPA 6mm GTRuger Ruger Precision Rifle 6mm ARC 24-inchBergara Premier Ridgeback 6mm Creedmoor 24-inchBrowning X-Bolt Max Long Range 6mm CreedmoorBergara B-14 HMR Wilderness 6mm Creedmoor

Lineage

Immediate parent
6.5 Creedmoor · Necked down from
Family TreeOpen 6mm Creedmoor in the interactive cartridge family tree

Connected reference

Reloading20 suitable powders — cross-reference

History

Introduced 2017 by Hornady and GA Precision for PRS. Necked down 6.5 Creedmoor. Rapidly adopted by competitive shooters. Less recoil than 6.5 with flatter trajectory.

FAQs

What twist rate does 6mm Creedmoor use?
6mm Creedmoor typically uses a 1:7.5 to 1:8 twist rate.
What bullet diameter is 6mm Creedmoor?
6mm Creedmoor uses a 0.2433″ (6.18 mm) diameter bullet.
Is 6mm Creedmoor still in production?
6mm Creedmoor is active; typical availability is common.
What is 6mm Creedmoor used for?
6mm Creedmoor is primarily used for competition, target, hunting.
What is 6mm Creedmoor based on?
6mm Creedmoor is derived from the 6.5 Creedmoor case.
What are the best powders for 6mm Creedmoor?
Reloading powders commonly listed for 6mm Creedmoor include Benchmark, AR 2207, AR 2208, IMR 3031, among 20 suitable options.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 86 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →

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