Douglas 7mm 1-9 Twist CM #4 Contour Ultra Rifled Barrel – CONTOUR #4, MFR # 7MM9CM4
Build your next custom 7mm rifle on a proven match-grade foundation with the CONTOUR #4 7MM9CM4 – the Douglas 7mm 1-9 Twist CM #4 Contour Ultra Rifled Barrel. Part of Douglas’s famous Double XX Ultra Rifled series, this barrel blank is engineered for shooters and gunsmiths who demand serious accuracy, tight tolerance control, and long-term reliability in a medium-weight hunting or precision rifle profile. Frisco Guns+2Brownells UK+2
Whether you’re chambering a 7mm hunting rig, a do-everything field rifle, or a custom long-range setup, this #4 contour blank delivers the ideal balance of stiffness, weight, and Douglas craftsmanship.
Key Specs – CONTOUR #4 7MM9CM4
SEO Overview – What Is CONTOUR #4 7MM9CM4?
Typical searches for this product include:
This barrel is a 7mm (.284) chrome-moly #4 contour Ultra Rifled barrel blank built by Douglas, one of the oldest and most respected barrel makers in the U.S. It’s specifically designed as a premium rebarrel option for custom 7mm rifles, combining match-grade bore quality with a medium-heavy contour that’s right at home on hunting rifles, precision field guns, and long-range setups. Primary Tactical+2Frisco Guns+2
Douglas Double XX Ultra Rifled – Match-Grade Quality
Douglas Double XX Ultra Rifled barrels are renowned for their consistency and accuracy, thanks to a carefully controlled manufacturing process:
Button-rifled bores provide unequalled smoothness, helping reduce fouling and produce consistent velocities. Primary Tactical+1
Groove diameter and straightness are held to about 0.0005" tolerances, giving you true match-grade geometry in a production blank. Primary Tactical+1
6-groove rifling (for .22–.338 Douglas calibers) is a proven pattern for precision and easy load development. Primary Tactical+1
Barrels are fully stress-relieved, with no straightening performed after rifling, helping them stay stable and predictable as they heat up and cool down. Primary Tactical+1
For SEO copy, think: “Douglas Double XX Ultra Rifled match-grade barrel blank – 7mm 1:9 twist, chrome moly, #4 contour.”
7mm / .284 Caliber with 1:9 Twist – Modern Bullet Versatility
The 1:9" twist rate in this 7mm barrel blank is chosen to support the performance of modern .284 bullets: Frisco Guns+2Crow Wholesale+2
Excellent for a wide range of popular 7mm bullet weights used in cartridges like 7mm-08, 7mm short magnums, and other .284-based builds (depending on how it’s chambered).
Allows you to run traditional hunting bullets as well as many of today’s high-BC match and hunting projectiles for extended-range work.
A smart choice for shooters wanting a single barrel that can handle light, fast loads and heavier long-range loads with appropriate load development.
If you’re listing this product, highlight “7mm (.284) 1:9 twist for flexible bullet choice from medium to heavy 7mm projectiles.”
#4 Contour – The Sweet Spot of Stiffness and Carry Weight
Douglas’s #4 contour is a medium, semi-heavy sporter profile, ideal for rifles that must both shoot precisely and carry well: Frisco Guns+2GearChase+2
Heavier than a #1 or #2 sporter, giving you more stiffness and thermal mass for consistent groups as the barrel warms.
Lighter than full bull or heavy varmint contours, so your rifle is still practical to carry in the field, up mountains, or on long stalks.
A great fit for general-purpose hunting rifles, precision hunting builds, and field-ready long-range rigs where you don’t want to haul a bench-rest profile.
Think of the #4 as the “do-everything” contour for serious 7mm builds.
Chrome Moly Steel – Durable, Traditional Barrel Material
The 7MM9CM4 is specifically the chrome moly (CM) version of the Douglas #4 contour barrel: Primary Tactical+2Frisco Guns+2
Made from 4140 chrome moly steel, trusted for its strength, toughness, and impact resistance in centerfire rifle applications.
Readily accepts bluing, Cerakote, nitriding, and other protective finishes, giving you flexibility in the final look and corrosion protection.
A classic barrel material choice for hunters and precision shooters who prioritize robustness and service life.
If you prefer the traditional feel and finish of CM over stainless, this model is the one you’re after.
Unthreaded, Unchambered Blank – Ready for Your Gunsmith
The CONTOUR #4 7MM9CM4 is sold as a rough-turned barrel blank: Primary Tactical+1
Not threaded or chambered – it must be finished by a qualified gunsmith, who will cut the correct shank, threads, and chamber for your chosen action and cartridge.
Unturned blanks from Douglas are typically 0.025"–0.050" larger in diameter and about 1–1½" longer than the “finished” dimensions shown on charts, giving your smith room to true, fit, and crown the barrel precisely. Primary Tactical+1
This means you get a barrel that is custom-finished to your exact specs, rather than a one-size-fits-all factory tube.
Perfect for premium rebarrel jobs where chamber, throat, and headspace are tailored to your specific loads and use case.
Ideal Applications – Where the 7MM9CM4 Shines
The Douglas 7mm 1-9 Twist CM #4 Contour Ultra Rifled Barrel is an outstanding choice for:
Custom 7mm hunting rifles – from Western big-game setups to all-around deer rifles where precision and downrange performance matter.
Long-range hunting and practical precision rigs, where you want a barrel that shoots like a match tube but still carries like a field rifle.
Rebarreling quality actions (Rem 700s, custom clones, etc.) to upgrade factory barrels to a true Douglas Double XX match-grade blank. Brownells+2Crow Wholesale+2
Shooters who want a balanced 7mm platform capable of exploiting modern high-BC bullets without being weighed down by a full bull contour.
Why Choose CONTOUR #4 7MM9CM4 for Your Next Build?
Among 7mm barrel blanks, the CONTOUR #4 7MM9CM4 stands out because it offers:
Douglas Double XX Ultra Rifled heritage – button-rifled, stress-relieved, and held to exceptionally tight tolerances for proven accuracy. Primary Tactical+1
7mm (.284) 1:9 twist flexibility, ideal for many of today’s most effective hunting and match bullets. Frisco Guns+1
A #4 medium contour that balances stiffness and carry weight for real-world hunting and field shooting. Frisco Guns+1
4140 chrome moly construction for strength, durability, and finish options to match your build. Primary Tactical+2Frisco Guns+2
A rough-turned, unthreaded, unchambered blank, giving your gunsmith the freedom to build a rifle that’s truly tuned to you. Primary Tactical+1
If you’re specifically searching “CONTOUR #4 7MM9CM4” or “Douglas 7mm 1-9 Twist CM #4 Contour Ultra Rifled Barrel 237284094”, this is the exact chrome-moly #4 contour barrel blank you want—ready to anchor a custom 7mm rifle that’s accurate, consistent, and built to perform for seasons to come.
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