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Barrel Blanks

Barrel Blanks

Barrel Blanks

Cut-rifled match-grade barrel blanks from Bartlein, Krieger, Brux, Custom Rifle Barrels. Stainless steel and carbon-fiber-wrapped options in calibers from 6mm through .338 with twist rates matched to your bullet and discipline. Chambered by your gunsmith. In stock in Fargo.

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How to Choose a Rifle Barrel Blank

Four variables settle most barrel decisions: caliber, twist rate, contour, and length. Material and rifling method stack on top.

Caliber and bullet weight. The caliber drives bore diameter. Bullet weight drives twist. A 6.5 Creedmoor running 140-class match bullets wants 1:8. Running 147 ELD-M and 150s, step to 1:7.5. Heavier, longer bullets need faster twists to stabilize.

Twist rate. Twist is inches per revolution. Slower twists (1:10, 1:11) are fine for lighter, shorter bullets. Faster twists (1:7.5, 1:7) stabilize long VLDs and high-BC match projectiles. Match the twist to the heaviest bullet you plan to run, not the lightest.

Contour. Heavier contours (MTU, M24, Heavy Palma, Heavy Varmint) damp harmonics, hold barrel time consistent, and balance rifles forward for bag and barricade work. Lighter contours (Medium Palma, Sendero, #4 sporters) save weight for hunting and NRL Hunter where you carry the rifle.

Length. Most PRS and F-Class rigs run 24 to 28 inches. Benchrest sits at 20 to 24. Hunting rifles shorten for handling, usually 20 to 24. Longer barrels burn more powder and raise muzzle velocity. Past about 26 inches on most cartridges you see diminishing returns.

Material. Stainless steel (416R most common) is the standard for match-grade blanks. Carbon-fiber-wrapped blanks like Bartlein's shed about 20 to 25 percent of the weight of a steel blank in the same contour, useful where every ounce matters.

Brands We Carry

Bartlein. Single-point cut-rifled in Jackson, Wisconsin. Bartlein holds uniform twist rate to four decimal places, offers 4R and 5R rifling, and stocks carbon-fiber-wrapped variants in their #4 Bull Sporter, #13 Remington Varmint and #14 M24 contours up through .338. Community consensus puts Bartlein on a majority of top PRS and F-Class finishers' rifles. Read the Bartlein brand page for the full lineup.

Krieger. Single-point cut-rifled. Every blank is double heat-treated and cryogenically treated before machining. Lapped to finishes under 16 micro-inch in the direction of bullet travel. Cut rifling lets Krieger produce virtually any twist rate on request. Read the Krieger brand page for the full contour list.

Brux. Single-point cut-rifled in Lodi, Wisconsin by Norman Brux. Uses solid carbide cutter hooks and an eight-step precision process. 4150 chromemoly or 416R stainless, double stress-relieved. Hand-made in small batches. Read the Brux brand page for details.

Custom Rifle Barrels (CRB). Cut-rifled, hand-lapped, 4-groove barrels made in Oklahoma by Austin Orgain, a two-time PRS Champion and AG Cup Champion. CRB blanks are a favorite with PRS shooters who want a barrel from a barrel-maker who also competes at the top. Read the CRB brand page.

Barrel Blanks by Discipline

PRS and NRL. Most top finishers run 24 to 27 inches in a medium-to-heavy contour (Medium Palma through M24). 6mm Dasher and 6mm GT shooters typically run 1:7.5 or 1:8. 6.5 Creedmoor shooters run 1:8 with 140 to 147 class match bullets.

F-Class and benchrest. Heavier contours (Heavy Varmint, MTU, Heavy Palma) at 26 to 30 inches. Twist matches the bullet: 1:8 for most 6mm 105 to 115 grain match projectiles, 1:7.5 for 6.5mm 140 to 150 grain.

Long-range hunting and NRL Hunter. Lighter sporter contours (#3, #4, Sendero, Medium Palma) at 22 to 24 inches. Carbon-fiber-wrapped Bartlein blanks sit here when weight is a priority. Twist follows the bullet weight for the cartridge.

Rimfire match and NRL22. Lilja is the choice for .22 LR benchrest and NRL22 builds. Hand-lapped, button-rifled 416 stainless. Twist options cover competitive .22 LR profiles.

Cut-Rifled vs Button-Rifled

Both methods produce match-grade barrels. Records are held by both. The practical differences:

Cut rifling removes material from each groove one pass at a time, roughly 0.0001 inch per cut, over hundreds of passes. No pressure is pushed into the steel, which minimizes residual stress. Twist can be any rate the machine is set for. Bartlein, Krieger, Brux and CRB are all single-point cut-rifled.

Button rifling uses a carbide button drawn through the bore to form the grooves in a single pass. Faster to produce, produces a very smooth bore, but introduces stress the manufacturer has to relieve before final lap. Lilja button-rifles their barrels and finish-laps by hand.

Manufacturing method matters less than quality control. Pick the brand that matches your discipline, budget and lead time.

Frequently Asked Questions

What is the difference between a barrel blank and a pre-fit?

A blank is drilled, reamed, rifled and contoured, but not chambered or threaded. Your gunsmith chambers, threads the shank to fit your action, and crowns the muzzle. A pre-fit is all of that already done for a specific action pattern (Rem 700, Savage, Tikka). Blanks give you total control over chamber reamer, headspace and length. Pre-fits save time and money.

Does a barrel blank need to be chambered by a gunsmith?

Yes. Blanks ship unchambered. A competent gunsmith chambers with your choice of reamer, threads the breech for your action, sets headspace, threads or crowns the muzzle, and installs the barrel.

How long will a match barrel last?

Depends on the cartridge and how you run it. A 6.5 Creedmoor barrel typically holds match accuracy for 2,000 to 3,000 rounds. A 6mm Dasher or 6.5x284 will burn out faster, often 1,500 to 2,000 rounds. A .308 match barrel can run 5,000 rounds or more. Heat is the biggest killer. Slow-fire strings and a cool-down between groups extends barrel life.

Cut-rifled or button-rifled, which is better?

Neither wins on paper. Both methods set national records. Cut rifling is the standard for custom match-grade work because it produces a consistent twist and very low residual stress. Button rifling is faster to produce and still match-capable when the manufacturer does the heat-relief and lapping work correctly.

Which twist rate do I need?

Match the twist to the heaviest bullet you plan to run. For 6.5 Creedmoor with 140 to 147 grain match bullets, 1:8 works. With 147 to 150 grain, step to 1:7.5. For 6mm with 105 to 115 grain VLDs, 1:7.5 or 1:8. For 300 PRC with 230 to 245 grain bullets, 1:8.5 or 1:9. The Berger twist-rate calculator is the standard second check.

What contour should I pick?

For PRS, a medium-to-heavy contour at 24 to 27 inches: Medium Palma, Heavy Palma, MTU, M24 or Bartlein B#13 / B#14. For F-Class and benchrest, heavier still. For hunting and NRL Hunter, lighter sporter contours or a carbon-fiber-wrapped blank to save weight. Contour drives rifle balance more than it drives accuracy.

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