I need some help . Anyone KNOW what the muzzle Velocity /Or what Flobert-Rundkugein 6mm BB amunition energy is. Can it be shot in a 1st mod.2nd issue smith & wesson in good condition.?
I have no idea of what this particular caliber is, however if it's truly a 6mm caliber it's too large for a 22 caliber barrel. Six millimeters converts to a .236 caliber in the inch system, so that ball would be much too large for the bore.