HELP! What caliber is a Gecado Sul bolt action rifle?

[old rockape]

You probably have a training or a Zimmer rifle. Both are for indoor use. It will be chambered for the 6mm Flobert, which uses the priming charge to drive a small projectile. If the barrel is more than 8" the projectile will slow down on the bore.
It might chamber .22 short. However, beware the .22 short may be too powerful and result case failure the extractor being blown out sideways.
6mm Flobert is still available in Europe from RWS.

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