Quick Answer
Bullet expansion does not significantly affect 7mm SAUM performance on elk, as the cartridge's flat trajectory and high kinetic energy already make it well-suited for long-range shots. This is due to the bullet's high velocity and sectional density, which allows it to penetrate deeply. While bullet expansion is desirable, it is not the primary factor in 7mm SAUM performance.
Understanding the 7mm SAUM Cartridge
The 7mm SAUM (Shawnee Accubond Ultra Magnum) is a powerful cartridge designed for long-range hunting. With a maximum case capacity of 93.5 grains of water and a 1.540-inch case length, it can propel bullets at velocities exceeding 3,200 feet per second. The cartridge’s high kinetic energy and flat trajectory make it ideal for taking down large game such as elk at distances up to 500 yards.
Bullet Selection and Expansion
When hunting elk with a 7mm SAUM, selecting the right bullet is crucial. Look for bullets with high sectional density and a flat, aerodynamic profile to ensure deep penetration and reliable expansion. For example, the 140-grain Berger VLD Hunting bullet has a sectional density of 0.256 and a ballistic coefficient of 0.640, making it an excellent choice for long-range hunting. When bullet expansion occurs, it should be moderate, with a diameter increase of 1.5 to 2.0 inches, to ensure deep penetration and a clean kill.
Hunting Elk with the 7mm SAUM
When hunting elk with a 7mm SAUM, it’s essential to use a high-quality scope with a good ballistic reticle. The Leupold VX-3i 6.5-20x50mm scope, for example, features a Ballistic Aiming System (BAS) that allows you to accurately estimate bullet drop and wind deflection. When taking a shot, aim for the elk’s vital organs, such as the heart and lungs, to ensure a quick and humane kill.
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