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Bartlein Barrels

Bartlein Barrel - SS, 6.5mm, B#11 Medium Palma, 8 twist, 29'' blank, 5R

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Bartlein Barrels - Precision Rifling for Superior Performance

Bartlein Barrel - Stainless Steel, 6.5mm, Medium Palma Contour, 8 Twist, 29" Blank, 5R


At Bartlein Barrels, we prioritize the essentials in barrel making: clear, precision rifling, durability, and innovative features for superior performance. Our Medium Palma, 6.5mm stainless steel barrel is a testament to our commitment to quality, designed with a 29'' blank and a 5R rifling pattern for unparalleled accuracy.

Contour and Weight

Barrel contour significantly influences weight, with heavier contours providing stability that enhances shooting performance. Despite common beliefs, our single point cut rifling process ensures minimal stress, making contour choice less critical for maintaining accuracy, even under thermal expansion.

Performance and Handling

Heavier barrels typically offer better shooting experiences by reducing recoil and increasing stamina over long shooting sessions. However, Bartlein's advanced rifling techniques ensure that lighter contours can perform just as well, if not better, in certain conditions.

Suppressor Compatibility

While suppressors enhance performance by damping harmonic vibrations, we recommend pairing them with barrels of at least a medium palma contour to prevent accuracy degradation.

Superior Rifling Method

Our single point cut rifling is superior to button rifling, eliminating stress and maintaining bore integrity even after contour reduction or muzzle threading, ensuring consistent accuracy.

Fluting Benefits

  • Weight Reduction: Fluting decreases barrel weight without compromising contour.
  • Improved Cooling: Increased surface area facilitates better heat dissipation.
  • Enhanced Aesthetics: Adds a distinct appearance to the barrel.

While too deep fluting can introduce vibration issues, optimal fluting enhances barrel stiffness and performance.

Rifling Styles

Offering 4-groove, 5R, and conventional-5 rifling, Bartlein Barrels caters to all shooting disciplines. The 5R rifling, in particular, minimizes bullet deformation, enhancing flight stability and reducing the risk of bullet failure.

Expert Insights

Feedback from ammunition and bullet manufacturers has validated the efficacy of our rifling styles, with particular note on the 5R's positive impact on bullet trajectory.

Special Considerations

While our rifling generally suits a wide range of bullets, specific short jacket 6mm bullets used in bench shooting may perform better with conventional rifling patterns due to their unique design.

Discover the Bartlein difference: Precision barrels designed for peak performance. Visit us for more information on how to elevate your shooting experience.

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Additional Information

Caliber / Bore Size:
B#11 Medium Palma
29in Blank
Stainless Steel
Twist Rate:
1 in 08.00in
Groove Type:
# Grooves:
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