Quick Answer
Aiming for a 100-yard zero is generally considered optimal for a .308 deer rifle, as it offers the flattest trajectory and most accurate shot placement at medium ranges, while still being suitable for longer shots.
Optimal Zeroing Distance Rationale
When zeroing a .308 rifle for deer hunting, the goal is to find a distance at which the bullet’s trajectory is as flat as possible. This allows for quick and accurate shots at various ranges. Aiming for a 100-yard zero is a common practice due to the .308 Winchester cartridge’s ballistics.
Ballistic Considerations for the .308
The .308 Winchester has a relatively flat trajectory, but it still drops 24.8 inches at 200 yards and 49.2 inches at 300 yards. This means that if you zero your rifle at 200 yards, you’ll be over-shooting your target at 100 yards by a significant margin. Aiming for a 100-yard zero mitigates this issue and provides a more forgiving shooting solution.
Practical Zeroing Techniques
To zero your .308 rifle at 100 yards, start by setting your sights to the recommended starting point for your specific rifle and scope combination. Then, shoot a series of shots at a 100-yard target, observing the impact points and making adjustments accordingly. Aim for a grouping of 2-3 inches or less to confirm your zero. Keep in mind that the specific zeroing procedure may vary depending on your scope’s reticle and the rifle’s characteristics.
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