The CONTOUR #5 237923105 – Douglas 6mm 1-10 Twist SS #5 Contour Ultra Rifled Barrel is a premium stainless-steel barrel blank designed for shooters and gunsmiths who demand true match-grade accuracy from their .243/6mm builds. Part of the renowned Douglas Double XX Ultra Rifled line, this #5 contour stainless barrel is ideal for precision varmint rigs, long-range 6mm hunting rifles, and custom target builds where consistency and durability are non-negotiable. Frisco Guns+2Brownells+2
6mm (.243) Stainless Barrel with 1:10 Twist
This barrel blank is factory-spec’d for AAE_243 / 6mm (.243) caliber, giving you a rock-solid foundation for popular 6mm cartridges once properly chambered by your gunsmith. Frisco Guns+1
Caliber: AAE_243 / 6mm (.243)
Twist Rate: 1:10" – an excellent all-around twist for stabilizing a wide range of common 6mm bullet weights used in varmint, predator, and medium-game loads. Frisco Guns+2Brownells UK+2
Style: Douglas Ultra Rifled #5 contour barrel blank in the Double XX premium series. Brownells+2Brownells Finland+2
Whether you’re building a do-it-all .243 Win, a custom 6mm wildcat, or another 6mm-based cartridge, this twist rate gives you the flexibility to tune loads from light varmint bullets to heavier hunting projectiles.
#5 Contour – Heavy Medium Profile for Precision & Heat Control
The #5 contour is a proven heavy/medium profile that delivers excellent rigidity without going full “benchrest heavy”:
Contour: #5 – a substantial profile that resists point-of-impact shift as the barrel warms up, making it ideal for extended shot strings on varmints or steel. Frisco Guns+2Primary Tactical+2
Weight: Approx. 3.85 lbs (blank), giving you a finished rifle that’s stable on a bipod or bag, yet still field-manageable for prone and supported hunting shots. Frisco Guns
If you want a 6mm rifle that can shoot small groups over multiple rounds, the #5 contour is a smart balance between precision-focused stiffness and real-world practicality.
Douglas Double XX Ultra Rifled – Match-Grade Manufacturing
Douglas Double XX barrels are famous for their premium quality and proven accuracy, and this stainless 6mm #5 contour blank continues that legacy:
For builders who care about group size, cold-bore consistency, and long-term performance, Douglas Double XX Ultra Rifled blanks are a go-to choice.
High-Quality Stainless Steel for Durability & Corrosion Resistance
Unlike basic chrome moly tubes, the CONTOUR #5 237923105 is made from stainless steel, offering enhanced protection and longevity:
Material: Stainless steel – specifically listed as such for this 6mm #5 contour model. Frisco Guns+2Brownells UK+2
Excellent corrosion resistance, ideal for rifles that see variable weather, high humidity, or infrequent cleaning on long trips. Ammunition for Sale+1
Machines cleanly for precise chambering, threading, and crowning, which gunsmiths appreciate when building high-accuracy rifles. Primary Tactical+1
Stainless construction makes this barrel especially appealing for varmint and predator rifles that spend a lot of time outdoors in less-than-perfect conditions.
Unthreaded, Unchambered Blank – Fully Custom-Ready
As a true barrel blank, the Douglas 6mm 1-10 Twist SS #5 Contour Ultra Rifled Barrel is delivered ready for your gunsmith to tailor:
Unthreaded and unchambered, giving complete freedom to choose your 6mm cartridge, throat length, and freebore. Primary Tactical+2greatgunparts.com+2
Based on Douglas #5 finished contour specs; unturned blanks may arrive slightly oversize in length and diameter, allowing final fitting to your action and desired finished length. Primary Tactical+1
Intended for professional rebarrel projects and custom rifle builds where precision machining and correct headspacing are critical.
Important: For safety and maximum performance, this barrel blank must be installed, chambered, and crowned by a qualified gunsmith.
Ideal Applications for the Douglas 6mm SS #5 Contour Barrel
With its 6mm caliber, stainless construction, and #5 contour, the CONTOUR #5 237923105 is a superb choice for:
Varmint rifles built around .243 or other 6mm cartridges, where high round counts and heat management matter.
Precision hunting rifles that need to hold tight groups at extended ranges on coyotes, antelope, and similar game.
Steel and practical rifle builds where accuracy and repeatability are more important than having the lightest possible barrel.
Rebarrel projects transforming an older factory rifle into a modern, match-capable 6mm platform.
If your next build demands stainless durability, match-grade rifling, and a contour that shoots as good as it looks, this Douglas #5 6mm barrel is a standout option.
Key Specs – CONTOUR #5 237923105
From Douglas and major distributors: brownells.com.au+4Frisco Guns+4Brownells+4
Product Name: Douglas 6mm 1-10 Twist SS #5 Contour Ultra Rifled Barrel
Listing / Stock ID: CONTOUR #5 237923105
Manufacturer: Douglas (Double XX Ultra Rifled series)
Manufacturer Part Number (often listed): 6MM10SS5 crowwholesale.com
Caliber: AAE_243 / 6mm (.243)
Twist Rate: 1:10"
Contour: #5 (heavy/medium contour)
Style: Ultra Rifled, Douglas Double XX premium barrel blank
Material: Stainless steel
Rifling: 6-groove, button rifled, stress-relieved
Tolerance: Groove diameter & straightness held to ~0.0005" (Douglas Double XX spec) Primary Tactical+2Brownells Finland+2
Weight (blank): Approx. 3.85 lbs Frisco Guns
Configuration: Unthreaded, unchambered #5 contour barrel blank
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