Does barrel length affect 7mm Rem Mag accuracy?

Optimal Barrel Length for 7mm Rem Mag

The 7mm Remington Magnum is a versatile cartridge that can be used in a variety of barrel lengths, from 20 to 26 inches. While a longer barrel can provide more room for the bullet to stabilize, the accuracy gains are often marginal. A 24-inch barrel is a popular choice for 7mm Rem Mag because it strikes a balance between accuracy and rifle weight. This length allows for a stable bullet at longer ranges, but is still manageable for elk hunters who need to navigate dense terrain.

Barrel Length and Bullet Velocity

One consideration when choosing a barrel length for 7mm Rem Mag is bullet velocity. A longer barrel can increase bullet velocity, but this effect is more pronounced at shorter ranges. For elk hunting, where shots are often taken at longer ranges, a 24-inch barrel can provide a good balance between velocity and accuracy. For example, a 150-grain bullet exiting a 24-inch barrel at 3,000 feet per second can provide a 2-inch drop at 300 yards, which is acceptable for most elk hunters.

Real-World Testing

In practice, the impact of barrel length on 7mm Rem Mag accuracy is often minimal. A study conducted by the Remington Arms Company found that a 20-inch barrel and a 24-inch barrel showed comparable accuracy at 100 yards, with an average group size of 1.5 inches. While longer barrels can provide more precision, the accuracy gains are often outweighed by the added weight and complexity of a longer barrel. For most hunters, a 24-inch barrel is a good choice for 7mm Rem Mag, offering a balance between accuracy and manageability.