Bartlein Barrel - Stainless Steel, 5.56mm, B#11 Medium Palma, 7.5 Twist, 29'' Blank, 5R

Discover the secrets of barrel contours and rifling that can elevate your shooting game with Bartlein Barrels. In this comprehensive guide, we delve into the impact of barrel contours, the importance of single point cut rifling, and the benefits of fluting and rifling styles.

Do Barrel Contours Matter?

Yes, barrel contours do matter! The weight and design of your barrel contour can influence your shooting experience. Heavier contours can help stabilize your shots and resist barrel movement when it heats up, resulting in improved accuracy.

Single Point Cut Rifling vs. Button Rifling

At Bartlein Barrels, we exclusively use single point cut rifling to avoid inducing stress into the barrel blank. Button rifling can lead to bore size changes, affecting accuracy. Our method ensures consistent bore dimensions and better accuracy.

Importance of Fluting

Fluting offers several advantages. It reduces barrel weight without altering the contour, enhances barrel cooling by increasing surface area, and adds a unique aesthetic appeal. However, excessive fluting can impact barrel stiffness and accuracy.

Rifling Styles and Benefits

Rifling plays a crucial role in bullet performance. Bartlein offers various rifling styles, including 4-groove, 5R, and Conventional-5. Rifling style choice doesn't significantly impact accuracy or barrel life, as confirmed by feedback from ammunition and bullet manufacturers.

Additional Benefits of 5R Rifling:

• The 5R rifling's gentler angle reduces bullet deformation and improves flight.
• It features an odd number of lands, preventing direct opposition and further enhancing bullet performance.
• Feedback from ammunition experts validates that 5R rifling aids bullet flight.

Exceptions to 5R Rifling:

In some cases, short jacket 6mm bullets, commonly used in short-range bench shooting, may not perform optimally with 5R rifling. These bullets may exhibit slightly larger group sizes due to the specific characteristics of their short bearing surface and the rifling style.

Choose Bartlein Barrels for precision and expertise in barrel craftsmanship. Whether you're a competitive shooter or a discerning enthusiast, our barrels are engineered to elevate your shooting experience.