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While telescopic sights offer riflemen an unrivaled view of their target, scopes are prone to accuracy loss as a result of bumping or jarring during unpacking, firing and hiking. Traditional iron sights sacrifice a magnified view for solid mechanics and sturdy positioning. Ramp sights are one of many forms of iron sights, and are adjusted by raising, lowering and sliding the rear gun sight to line up correctly with the front one.
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Secure the ramp sight to the rifle barrel before attempting to adjust anything. Most ramp sights are welded to the barrel, but some are attached with rings or screws. Always ensure a tight fit to the gun before attempting to zero in any sight.
Adjust the ramp sight vertically (elevation). If your ramp sight is adjusted with dials similar to those pictured above, turn the dial on the side. If your ramp sight rests on a notched piece of metal or plastic, lift the rear sight and slide the notched piece accordingly. Other ramp sights may be adjusted with screws or knobs.
Take a few shots at your target while resting your gun on a sandbag or sturdy foundation. Ensure that the front sight is centered vertically and horizontally with the rear sight for reliable gauging of sight accuracy.
Adjust the elevation of your ramp sight to compensate for bullet placement on the target. If the bullet landed below the target, lower the ramp sight. If the bullet landed above the target, raise the ramp sight.
Adjust your ramp sight horizontally (windage) using the knob, dial or screw on the side. Not all ramp sights have this functionality, especially those welded to the gun barrel. These ramp sights are centered on the barrel at the factory, and are common on air rifles and BB guns. If your rifle features a welded ramp sight and your bullets are landed off to the side of the target, you may have obstructions in the barrel or strong winds blowing across the shooting range.
Take a few shots at your target. As before, ensure that that the front sight is centered vertically and horizontally with the rear sight.
Adjust the windage of your ramp sight to compensate for bullet placement on the target. If your bullet landed to the left of the target, move your ramp sight to the right. If your bullet landed to the right of the target, move your ramp sight to the left.
- rifle image by sasha from Fotolia.com