Originally Posted by caldude
Generally it depends on the type of magazine. Box magazines are designed around a specific round, like .22LR. Tube magazines can fit many different lengths of rounds, typically .22LR and shorter versions. Tube magazines can be found on lever guns, bolt guns, and semi-autos. Some guns may not be able to feed the shorter rounds from the magazines though, so check with the manufacturer.
Thanks for the info gents.
Claude, what kind of semi auto are tube fed?