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Bartlein - Carbon Fiber Barrel Blank - .243 (6mm) Cal

Bartlein Barrels

Bartlein - Carbon Fiber Barrel Blank - .243 (6mm) Cal

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Not sure it fits? Call 1-970-242-6166 — you’ll talk to an expert who works with these parts every day.

Discover unparalleled accuracy with Bartlein's Carbon Fiber Barrel Blank in .243 (6mm) Caliber. Utilizing advanced carbon fiber technology, this barrel offers lightweight construction without compromising strength, making it ideal for competitive shooters and hunters alike.

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Overview

Bartlein 5R cut rifling in a 3 to 3.6 lb carbon fiber 6mm blank

The Bartlein .243 (6mm) carbon fiber barrel blank is a 5R cut-rifled stainless steel core wrapped in carbon fiber, sold unchambered for a gunsmith to fit. It comes in the #13 Varmint/Sendero and #14 M24/M40 contours, 1:7.5 twist, and 18 to 26 inch finish lengths. Other contours are available to order.

5R single-point cut rifling

Five lands with a gentler side angle than conventional rifling, and an odd count so no land sits directly opposite another. Bartlein's testing puts the BC loss from jacket deformation up to 5% lower, and cut rifling puts no stress into the blank.

Stainless core, carbon wrap

A full-length stainless steel liner carries the .243" bore, with 2.75" of bare steel at the breech before the carbon wrap begins. The resin has been tested stable past 500 degrees F.

Two contours, 2.8 to 3.6 lb

#13 Varmint/Sendero steps from a 1.200" breech to .950" and tapers to an .830" muzzle at 26", 2.8 to 3.6 lb by length. #14 M24/M40 tapers straight to a .900" muzzle, 3.1 to 3.8 lb. Those are Bartlein's published 6mm carbon fiber weights.

1:7.5 twist, five lengths

1:7.5 twist rate, in 18, 20, 22, 24 and 26 inch finish lengths. Each blank ships 1" over its finish length so your gunsmith can cut and crown the muzzle.

Specifications

Barrel

Caliber.243 (6mm)
Bore.243"
Rifling5R, single-point cut, hand lapped
CoreStainless steel, full length
WrapCarbon fiber
Exposed steel at breech2.75"
Resin ratingTested stable past 500 degrees F
Blank lengthFinish length plus 1" for cutting and crowning
Supplied asBlank: no chamber, thread or crown

#13 Varmint/Sendero contour

Breech diameter (A)1.200"
Breech cylinder (B)2.75"
Step ends at (C)4.350" from breech
Diameter at step (D).950"
Muzzle diameter (F).830" at 26"
Taper per inch.0067"

#14 M24/M40 contour

Breech diameter (A)1.200"
Breech cylinder (B)2.75"
ProfileStraight taper, no step
Muzzle diameter (F).900" at 26"
Taper per inch.013"

#13 blank weight

18" finish2.8 lb
20" finish2.95 lb
22" finish3.15 lb
24" finish3.4 lb
26" finish3.6 lb

#14 blank weight

18" finish3.1 lb
20" finish3.35 lb
22" finish3.5 lb
24" finish3.65 lb
26" finish3.8 lb

Options

Contours#13 Varmint/Sendero, #14 M24/M40
Twist rate1:7.5
Finish lengths18, 20, 22, 24, 26 in
Other contoursAvailable to order

Fitment

Will it work with your build?

Works with

  • Bolt-action rifles being rebarreled by a gunsmith for a 6mm cartridge
  • 6mm cartridges such as 6mm Creedmoor, 6mm Rem, 6x47 Lapua, .243 Win and .243 WSSM (.243" bore)
  • Suppressors: both muzzles are above Bartlein's .700" minimum

Will not work with

  • Gas guns (AR-15 and similar): Bartlein does not make gas-gun barrels
  • Pre-fit installs: this blank has no chamber, thread or crown

This is a blank, not a finished barrel. It must be chambered, threaded, crowned and installed by a qualified gunsmith, and the finish length you choose is the length after the extra 1" is cut from the muzzle. Rifle barrels ship for a flat $14.95 per order, any quantity, and do not qualify for free shipping.

Detail

Fitting it and the fine print

Which contour do I order, #13 or #14?

Both start at a 1.200" breech with 2.75" of exposed steel. The #13 Varmint/Sendero steps down to .950" at 4.350" from the breech and then tapers to an .830" muzzle at 26", so it is the lighter of the two at 2.8 to 3.6 lb. The #14 M24/M40 runs a single straight taper to a .900" muzzle at 26" and weighs 3.1 to 3.8 lb, about 0.3 to 0.25 lb more at the same length. Bartlein's guidance is that a heavier contour resists movement as the barrel heats. Both muzzles are above the .700" Bartlein likes to see under a suppressor. Other contours, including custom configurations, are available to order.

Is this a finished barrel?

No. Bartlein sells blanks only, no pre-fits and no gas-gun barrels. Your gunsmith chambers, threads, crowns and installs it. Every blank is 1" longer than the finish length you order: Bartlein hand laps each cut-rifled barrel, which can bell-mouth the muzzle, so at least 1.0" must come off the muzzle end. Chambering removes the same effect at the breech.

Caliber
.243 (6mm)
Rifling
5R cut, stainless core
Contours
#13, #14
Twist
1:7.5
Finish length
18 to 26 in
Breech diameter
1.200"

Works with

  • Bolt-action rebarrels
  • 6mm class 6mm Creedmoor, 6mm Rem
  • Suppressors (.700"+ muzzle)

Will not work with

  • Gas guns (AR-15)
  • Pre-fit installs

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Shipping

Free same day shipping

Most orders over $199 ship free. We ship same day on all in-stock orders received before 14:00 Mountain Time. Free Shipping orders use standard ground and typically deliver in 1 to 4 days. Excludes international orders, Alaska and Hawaii, and select oversized items. All orders valued over $1,000.00 ship signature required.

Overnight & expedited shipping

If you need an item fast, cost-effective expedited options are available at checkout. Most expedited orders ship via FedEx or Overnight Mail.

Local customers

We are in 2317 Grand Park Dr Unit 2B Grand Junction, CO 81505 and we stock every item we sell. We love seeing customers and encourage you to stop by — just leave a comment in the order notes during checkout.

International shipping

We ship to international shoppers in 82 countries registered with EasyExport®. Registration is free and EasyExport does not share your information, and you can register before or after you shop. See International Export for details.

Returns

Not quite perfect? Red Hawk will make it right, no matter what. Guaranteed. Most items have a 30-day window from the day the product was delivered to you. Excluded are ammo and ORM-D products, custom ordered items, items not in original condition, and international orders. Every item we sell also carries a manufacturer warranty, and we only work with manufacturers who stand behind their products.

Read the full shipping and returns policy

Common questions

How do I know the items I'm buying are compatible?

Check the Fitment section above — it lists what this part works with and what it does not. If you are still unsure, call 1-970-242-6166 or use the chat icon at the bottom right of the page — our team builds precision rifles with these parts every day.

Where are you located?

2317 Grand Park Dr Unit 2B Grand Junction, CO 81505. We ship every single order from our own warehouse and take pride in being part of our local hunting and competition shooting community.

I can't find the configuration I need — can you special order it?

Absolutely. Call 1-970-242-6166.

What if there is an issue with the product I ordered?

We will make it right, no matter what. We only carry products from top-tier manufacturers who stand behind them.

Which items need to ship to an FFL?

Only serialized firearm actions and receivers require an FFL transfer. Barrels, stocks, triggers and accessories ship straight to your door.

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