The CONTOUR #1 7MM9CM1 – Douglas 7mm 1-9 Twist CM #1 Contour Ultra Rifled Barrel is a premium-grade barrel blank designed for serious hunters, precision shooters, and gunsmiths who want top-tier accuracy from their 7mm builds. Part of the famous Douglas Double XX Ultra Rifled line, this #1 contour chrome moly barrel blank delivers match-level consistency in a lightweight, field-friendly profile. Brownells UK+1
Premium 7mm (.284) Ultra Rifled Barrel Blank
The CONTOUR #1 7MM9CM1 is purpose-built for 7mm (.284) cartridges, giving you a versatile foundation for a wide range of hunting and precision loads, depending on how your gunsmith chambers it. Brownells UK+1
Caliber: 7mm / .284 (AAJ_284) Frisco Guns+1
Twist Rate: 1:9", ideal for stabilizing the most common 7mm hunting and long-range bullet weights. Frisco Guns+1
Style: Douglas Ultra Rifled Double XX barrel blank – engineered for accuracy-focused rebarreling projects. Brownells UK+1
Whether you’re building a lightweight mountain rifle, a classic 7mm hunting rig, or a practical long-range bolt gun, this blank gives you the precision core your build deserves.
#1 Contour – Lightweight, Field-Ready Profile
Douglas’s #1 contour is a classic light sporter profile—perfect when you want a rifle that carries easily but still shoots like a custom build.
Designed as a lightweight hunting contour, making it an excellent choice for mountain, backcountry, and spot-and-stalk rifles.
Lighter than #3 and #5 contours, reducing overall rifle weight and improving balance in the hands.
Approximate blank weight: about 2.30 lb before final cutting and finishing. Frisco Guns+1
If your priority is carry weight and handling without giving up accuracy, the #1 contour hits that sweet spot.
Douglas Double XX Quality – Match-Grade Tolerances
The 7MM9CM1 isn’t just another barrel blank—it’s built to the well-known Douglas Double XX standard:
Button rifled for exceptional internal smoothness and uniform rifling. Brownells UK+1
Tolerances for groove diameter and straightness held to about 0.0005", giving the blank true match-grade potential. Brownells UK+1
6-groove rifling in calibers from .22 through .338 (including 7mm) for proven downrange performance. Brownells UK+1
No straightening is done; all barrels are stress-relieved after rifling to maintain stability during machining and heavy use. Brownells UK+1
For shooters who demand tight groups and reliable point of impact, starting with a Douglas Double XX blank is a smart move.
4140 Chrome Moly Steel – Strong, Durable & Finish-Friendly
The CONTOUR #1 7MM9CM1 uses chrome moly steel—the go-to choice for a wide range of custom hunting and target rifles. Brownells UK+1
Material: 4140 Chrome Moly Steel, noted for its strength, durability, and excellent machining characteristics.
Accepts traditional blued, Parkerized, or other protective finishes extremely well, giving you flexibility in the final look of your build. Primary Tactical+1
Tough enough for hard use in hunting, range, and competition while still providing refined accuracy once properly chambered and crowned.
This material choice makes life easier for your gunsmith and ensures your finished rifle will stand up to years of field use.
Unchambered, Non-Threaded Blank – Full Custom Flexibility
Like other Douglas barrel blanks, the 7MM9CM1 ships in a configuration meant to be tailored exactly to your project:
Unchambered and non-threaded – ready for your preferred 7mm cartridge and muzzle configuration. Primary Tactical+1
Provided as a finished #1 contour blank (not an unturned cylinder), so your smith can cut to length, chamber, and crown while preserving the light sporter profile. Frisco Guns+1
Ideal for bolt-action rebarrels and other custom rifle builds where you want full control over chamber, throat, and crown geometry.
Important: As with all barrel blanks, installation and finishing must be performed by a qualified gunsmith to ensure safety and optimal performance. Brownells UK+1
Ideal Applications for the Douglas 7mm #1 Contour Barrel
Thanks to its light contour, twist rate, and quality, the CONTOUR #1 7MM9CM1 excels in:
Big-game hunting rifles where you’ll be carrying the rifle all day and still expect sub-MOA performance with quality ammo.
Mountain and backcountry rigs where every ounce matters and reliability is non-negotiable.
Predator and varmint builds in 7mm for shooters who want a lightweight yet accurate walking rifle.
General-purpose hunting and field rifles that combine practical accuracy with easy handling in real-world conditions.
If your next project demands a 7mm barrel that’s light enough to carry and precise enough to trust on long shots, this Douglas #1 contour barrel blank is an excellent foundation.
Key Specs – CONTOUR #1 7MM9CM1
From Douglas / Brownells and distributors: Brownells UK+2Frisco Guns+2
Product Name: Douglas 7mm 1-9 Twist CM #1 Contour Ultra Rifled Barrel
Listing Name: CONTOUR #1 7MM9CM1
Manufacturer: Douglas
Manufacturer Part Number (MPN): 7MM9CM1 Brownells UK+1
SKU / Product Code: 237284091 Brownells UK+1
Caliber: 7mm / .284 (AAJ_284)
Twist Rate: 1:9"
Contour: #1 (light sporter profile)
Style: Ultra Rifled, Douglas Double XX premium-grade barrel blank
Material: 4140 Chrome Moly Steel
Rifling: 6-groove, button rifled, stress-relieved
Groove/straightness tolerance: ~0.0005" Brownells UK+1
Configuration: Unchambered, non-threaded barrel blank (#1 contour)
Approx. Weight (blank): ~2.30 lb Frisco Guns+1
Country of Origin: Made in the USA Brownells UK+1
SEO-Optimized Phrases Naturally Included
This long-form description is structured to help your product page rank for key search queries, including:
“CONTOUR #1 7MM9CM1 barrel blank”
“Douglas 7mm 1-9 Twist CM #1 Contour Ultra Rifled Barrel”
“7mm .284 chrome moly #1 contour hunting barrel”
“Douglas Double XX 7mm 1:9 twist light sporter barrel blank”
“Douglas 7MM9CM1 ultra rifled barrel for custom rifle builds”
Pair this content with clear product photos and a simple spec table, and you’ll give gunsmiths and custom rifle builders everything they need to confidently choose the Douglas CONTOUR #1 7MM9CM1 for their next 7mm project.
The End
