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Berger Button

In the practice of archery, each element counts to have a shooting precision, but also good performances. Thus, the Berger Button for bow or plunger button is essential for the archer. With an appropriate adjustment of this button, it is possible to reduce the archer's paradox.

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What is the Berger Button?

Also known as the plunger Button, the Berger Button is an accessory that is an integral part of the bow. It is composed of an internal spring. It is positioned on the bow riser and the arrow shaft. Its main function is to dampen the arrow when it is propelled. The pressure exerted by the arrow combined with the inertia of its head is enough to manhandle it. It can end up twisting.

The Berger Button can also reduce the undulations of the arrow when it is released. This phenomenon is commonly known as the "archer's paradox". When opening the fingers, the string slides. This causes the arrow to ripple when it leaves the bow.

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How to install a Berger Button?

The Berger Button is similar to a screw that fits into the bow at the riser. Its internal spring rests on the arrow shaft. The spring's stiffness influences the release of the arrow. The Berger Button must press perfectly on the center of the diameter of the arrow shaft. It acts as a shock absorber.

This way, it allows the arrow to be positioned on the arrow rest and in the bow window. The arrow must be aligned with the bow and protrude only half-thickness of the string beyond the outer side of the bow window. The string must be perfectly aligned with the bow axis. When done properly, the arrow should leave the bow as straight as possible.

How to adjust the Berger Button?

To properly align the Berger Button, the bow must first be aligned. Make sure that the string is aligned with the arrow and the sight. Next, take a narrow vertical strip of paper and place it on a wall or on the spot you are aiming at.

To make the adjustment successful, shoot several times at different distances from the target. For example, release the first arrows at a distance of 16 ft (5 meters) from the target. Then move back16 ft (5 meters) each time for the next shots. The last shot should be 131 ft (40 meters) from the target.

The adjustment of the Berger Button will depend on where the arrows land. If the arrows indicate a deviation, left or right, from the paper strip, it means that the spring pressure of the Berger Button must be changed.

The adjustment of the Berger Button can also be different depending on whether the archer is left-handed or right-handed. For the right-handed archer, if the arrow deviates to the left, the adjusting screw has to be loosened. If the arrow turns to the right, the screw must be tightened again. For a left-handed archer, it is the opposite.