Is auto-body filler considered a more permanent solution for bedding a rifle compared to epoxy?

Auto-body filler is not considered a more permanent solution for bedding a rifle compared to epoxy because it is primarily designed for automotive repairs to fill minor dents and surface imperfections, not for structural bonding or stability required in rifle bedding. Epoxy is specifically formulated for applications where a strong, durable bond is necessary, providing a stable foundation that can withstand recoil and environmental stresses associated with shooting.

Epoxy adheres well to both the wood of the stock and the metal of the action, creating a robust and long-lasting bedding material that helps improve accuracy by ensuring that the action is securely positioned relative to the stock. This secure fit is crucial, as it minimizes movement that can affect the rifle's performance.

In contrast, auto-body filler may degrade or crack under the repeated stresses of shooting, ultimately compromising the bedding's effectiveness. Therefore, while auto-body filler might serve temporary needs or minor adjustments, epoxy is the preferred choice for a reliable and lasting bedding solution in firearms applications.