Quote: yes - French Pinfire - probalby .41 cal. but might be .38 or even .32 - that's all I've got. I don't know if the inner cylinders are pinfire or not, but should be.
pinfire cartridges are french as anything can be and they are METRIC
the most common revolver rounds 5mm Pinfire 7mm Pinfire 9mm Pinfire 12mm Pinfire and, rare, 15mm Pinfire