Quick Answer
The recoil difference between a 7mm SAUM and a .308 is noticeable, with the 7mm SAUM generally having a 3-5% higher recoil impulse due to its faster twist rate and slightly larger case capacity.
Recoil Comparison Basics
When comparing recoil between the 7mm SAUM and the .308, it’s essential to consider the velocity and energy of the cartridges. The 7mm SAUM typically has a MV of 2,900-3,000 ft/s, while the .308 has a MV of approximately 2,700-2,800 ft/s. This difference in velocity contributes to the increased recoil impulse of the 7mm SAUM.
Measuring Recoil Impulse
The recoil impulse of a rifle can be measured in foot-pounds (ft-lbs) per second, which gives a more accurate representation of the felt recoil. Assuming a 200-grain 7mm SAUM bullet and a 150-grain .308 bullet, the estimated recoil impulses are approximately 15.3 ft-lbs/s for the 7mm SAUM and 14.5 ft-lbs/s for the .308. While the difference is relatively small, it’s noticeable, especially for shooters sensitive to recoil.
Practical Considerations for Elk Hunting
When hunting elk with a 7mm SAUM or a .308, it’s crucial to consider the rifle’s weight, stock design, and muzzle brake (if used) to minimize the felt recoil. A heavier rifle with a well-designed stock can help distribute the recoil more evenly, making the experience more manageable. Additionally, a muzzle brake can significantly reduce the perceived recoil by directing the gases away from the shooter’s face and reducing the muzzle rise.
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