PROOF Research Bolt-Action Barrel Blank — .284 Cal (7mm), 22" Length, Sendero Contour, 1:8" Twist, 5-Groove Rifling, Carbon Fiber Wrapped | Model 106471 | UPC 843068106471
Match-Grade Precision With Real-World Weight Savings
Unlock custom-rifle performance with the PROOF Research .284 caliber, 22" Sendero-contour carbon fiber–wrapped barrel blank. Purpose-built for gunsmiths and serious builders, this blank combines a match-grade stainless steel core with PROOF’s proprietary carbon fiber wrap to deliver a lighter, stiffer, and cooler-running barrel—without sacrificing accuracy. The 1:8" twist stabilizes a broad range of 7mm bullets, from modern high-BC projectiles to traditional hunting loads, while 5-groove rifling supports excellent jacket integrity and easy cleaning. If you’re building a mountain rifle, a crossover precision hunter, or a competition-ready 7mm, this blank is the foundation for consistent groups and confident hits.
Why Builders Choose PROOF Research Carbon Fiber
Serious Weight Reduction: Carbon fiber replaces excess steel mass, often cutting weight versus steel Sendero barrels while preserving contour stiffness.
Stiffness & Harmonics: The engineered layup improves rigidity to help maintain POI through heat cycles and positional changes.
Heat Dissipation: Carbon conducts heat along the wrap and promotes faster cooling, helping maintain accuracy during strings of fire.
Cold-Bore to Hot-Bore Consistency: PROOF’s composite construction is designed to keep harmonics predictable from the first shot to the last.
Corrosion Resistance: A stainless core and durable composite exterior offer long-term protection in harsh weather.
Note: Dimensions and performance advantages will vary by finished muzzle diameter, final chamber, ammo, and installation quality.
Key Features at a Glance
Caliber: .284 (7mm) barrel blank for custom chambering
Length: 22 inches — sweet-spot for hunting and crossover precision builds
Contour: Sendero — proven heavy/varmint-style profile for stability on target
Twist Rate: 1:8" — ideal for a wide range of modern 7mm bullets and long, high-BC projectiles
Rifling: 5 grooves — smooth engraving, easier cleaning, excellent jacket support
Construction: Carbon fiber wrapped over a match-grade stainless core
Platform: Bolt-action barrel blank (unchambered, unthreaded) for professional gunsmith fitting
Model / UPC: 106471 / 843068106471
What This Blank Lets You Build
Ultralight Mountain Hunter: Sendero stability without a nose-heavy carry.
Crossover Precision Rifle: Manageable weight with repeatable accuracy for field matches and long-range hunts.
7mm Powerhouse: Pair the 1:8" twist with modern 150–180+ gr bullets (verify stability for your chosen bullets) for excellent long-range ballistics.
Gunsmithing & Fitment Notes
Unchambered & Unthreaded: Requires chambering, crowning, and (if desired) muzzle threading by a qualified gunsmith.
Receiver Compatibility: Choose an action/tenon spec to match (e.g., Rem 700 pattern) during machining.
Contour & Inlet: Sendero contour typically needs a matching stock channel or inletting; verify with your stock/chassis maker.
Thermal Considerations: Carbon barrels can cool rapidly; avoid aggressive clamping or contact points that could alter harmonics.
Finish: Do not machine, sand, or coat the carbon wrap; protect during vise work with soft jaws and proper supports.
Performance Advantages in the Field
Faster Target Transitions: Lower front-end weight improves balance when shooting off bags, tripods, or natural rests.
Sustained Accuracy: Composite construction helps maintain precision during long shot strings and variable weather.
Real-World Durability: Engineered to withstand backcountry abuse, vehicle transport, and inclement weather with minimal maintenance.
Ideal Use Cases
Backcountry & Western Big Game: Lighter rifle, long-range confidence on elk, mule deer, pronghorn (where legal and ethical).
Precision Hunting / NRL Hunter: Keep rifle weight in check while retaining POI stability.
Target & Practice: Reliable heat management and consistent harmonics for round-count training days.
Technical Specifications (Model 106471)
Product Type: Bolt-action barrel blank (gunsmith-fit)
Caliber / Bore: .284 (7mm)
Overall Length: 22"
Contour: Sendero
Twist Rate: 1:8" (RH)
Rifling: 5-groove
Construction: Carbon fiber–wrapped composite over a match-grade stainless steel core
Chamber / Threads: None (to be cut by gunsmith)
Model Number: 106471
UPC: 843068106471
Exact outside diameters, weight, and recommended muzzle diameters vary by lot and finishing. Consult PROOF’s current dimension drawings and your smith’s recommendations before ordering components like muzzle devices and stocks.
Care & Maintenance
Break-In: Follow your gunsmith’s or PROOF’s recommended break-in routine for the new chamber and crown.
Cleaning: Use quality solvents, proper jags/rods, and avoid aggressive abrasives. Carbon wrap requires no external treatment—simply wipe clean.
Torque & Bedding: Ensure correct receiver torque; if bedding a stock, maintain free-float around the barrel and avoid contact with the carbon surface.
Frequently Asked Questions
Q: Is this ready to install?
A: It’s a blank—it must be chambered, threaded (if desired), and headspaced by a qualified gunsmith to your action and cartridge.
Q: Will 1:8" stabilize heavy 7mm bullets?
A: The 1:8" twist is suitable for many modern long-for-caliber 7mm bullets. Always verify stability with your specific projectile length/velocity.
Q: Can I Cerakote the carbon?
A: Do not coat, sand, or machine the carbon fiber wrap. Protect it during assembly and use as directed by the manufacturer.
Q: What stock inlet should I order?
A: A Sendero (or Sendero/varmint) channel is typically appropriate; confirm with your stock/chassis manufacturer’s chart.
SEO-Rich Highlights & Buyer Keywords
PROOF Research .284 barrel blank
22" Sendero contour carbon fiber–wrapped barrel
1:8" twist, 5-groove rifling for modern 7mm bullets
Lightweight, stiff, fast-cooling premium rifle barrel
Model 106471, UPC 843068106471
Meta Title (SEO)
PROOF Research .284 (7mm) Carbon Fiber Barrel Blank — 22" Sendero, 1:8" Twist, 5-Groove | 106471
Meta Description (SEO)
Build a lighter, stiffer custom 7mm with the PROOF Research .284 barrel blank. 22" Sendero contour, 1:8" twist, 5-groove rifling, carbon fiber–wrapped stainless core. Model 106471, UPC 843068106471.
Structured Data (Product Schema JSON-LD)
Responsible Use Reminder
All barreled actions must be chambered and headspaced by a qualified gunsmith. Always follow safe-handling practices, use appropriate ammunition, and verify function before field use.
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