Do longer barrels provide a significant velocity advantage for hunting?

Understanding the Relationship Between Barrel Length and Velocity

When building a custom rifle for hunting, one of the key considerations is the length of the barrel. While a longer barrel can provide a bit of a velocity advantage, the gains are not always proportional to the increase in barrel length. For example, a 26-inch barrel may provide a 10-20 fps advantage over a 22-inch barrel, but a 30-inch barrel may only provide an additional 5-10 fps advantage over the 26-inch barrel.

Measuring the Impact of Barrel Length on Velocity

To put this into perspective, consider the velocity gains for a .30-06 Springfield cartridge with a 150-grain bullet. A 22-inch barrel might yield a muzzle velocity of around 2800 fps, while a 26-inch barrel might reach a velocity of around 2900 fps. However, the 30-inch barrel might only reach a velocity of around 2920 fps. In this case, the additional 4 inches of barrel length provided a 20 fps gain, but the additional 4 inches beyond that only provided a 20 fps gain as well.

Design Considerations for Custom Hunting Rifles

When building a custom hunting rifle, the choice of barrel length will depend on a variety of factors, including the specific cartridge and bullet weight, the intended hunting application, and personal preference. While a longer barrel can provide a slight velocity advantage, it may also impact the rifle’s overall weight and balance, as well as its handling characteristics. Ultimately, the ideal barrel length will depend on a careful balance of these competing factors, and may not necessarily be the longest possible barrel length.