Berger Button - Precision and optimal tuning for archers

Essential for Olympic recurve or barebow, the Berger button (or plunger) optimizes arrow release.
Thanks to its spring-loaded piston integrated into the handle, on the side of the bow window, it corrects arrow oscillations at departure, thus improving its stability early in its flight and therefore accuracy and grouping on target.
Different finishes, different models to choose from in our catalog, but with a single objective: an ever more precise shot!

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Description

In archery practice, every element counts to have shooting accuracy and good performance. Thus, the Berger Button proves to be essential for the classic or barebow archer. With optimal adjustment of this button, it is possible to reduce what is called the archer's paradox, namely the undulation of the arrow as it leaves the bow, which can harm grouping on the target if it is not straightened quickly.

If the arrow wobbles, it's due to the friction of the fingers on the string upon release, but also due to the pressure it experiences when in contact with the air, causing it to deform.

How to install a Berger Button?

The Berger Button looks like a screw that fits into the bow at the handle. The piston should press on the center of the arrow shaft for optimal functioning.

It allows positioning the arrow on the arrow rest and in the bow window.

The arrow should be aligned with the bow and extend just half a thickness beyond the string on the outer side of the bow window. The string, in turn, must be perfectly aligned with the axis of the bow. When these installations are done correctly, the arrow should leave the bow as straight as possible at exit... then it will remain to adjust the spring stiffness (The spring stiffness will also influence the arrow's exit).

How to adjust the Berger Button?

Once the alignment is done, you can start to rough out the spring stiffness. 

Several adjustment methods exist, we offer you one that will already allow you to rough out the stiffness setting of your Berger button.

At about twenty meters, fix a strip of paper 12-15 cm wide on the shooting wall.

Aim for the center and shoot several fletched arrows (with feathers) then one or two unfletched arrows and observe the result: 

Laterality Unfletched arrows compared to fletched arrows Action on the Berger button spring
Left-handed the arrows are to the left tighten the spring (compress)
Left-handed the arrows are to the right loosen the spring 
Right-handed  the arrows are to the right tighten the spring (compress)
Right-handed the arrows are to the left loosen the spring

Hattila's tip: opting for a Berger button with micrometric adjustments makes it easier and more precise to make the settings.